US2346241A - Work clamping mechanism - Google Patents

Work clamping mechanism Download PDF

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Publication number
US2346241A
US2346241A US362985A US36298540A US2346241A US 2346241 A US2346241 A US 2346241A US 362985 A US362985 A US 362985A US 36298540 A US36298540 A US 36298540A US 2346241 A US2346241 A US 2346241A
Authority
US
United States
Prior art keywords
work
clamping
buttonhole
clamp
slit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US362985A
Other languages
English (en)
Inventor
David B Thornton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reece Button Hole Machine Co
Original Assignee
Reece Button Hole Machine Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Reece Button Hole Machine Co filed Critical Reece Button Hole Machine Co
Priority to US362985A priority Critical patent/US2346241A/en
Application granted granted Critical
Publication of US2346241A publication Critical patent/US2346241A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C1/00—Elements of cigar manufacture
    • A24C1/26—Applying the wrapper
    • A24C1/30—Devices for applying the wrapper to the bunch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0064—Producing wearing apparel
    • B29D99/0075—Bathing caps
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings or for fastening articles, e.g. buttons, by sewing
    • D05B3/06—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings or for fastening articles, e.g. buttons, by sewing for sewing buttonholes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4807—Headwear
    • B29L2031/4814—Hats
    • B29L2031/4828—Bathing-caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2340/00—Apparatus for treating textiles

Definitions

  • This invention relates to sewing machines of the type designed to sew a suitably positioned line of stitches around an area or opening in the work such as a buttonhole, and more particularly to the work-clamping mechanism employed in such machines. 7
  • the work-clamping mechanism usually comprises two clamps on the bed frame of the machine which are movable to and from each other.
  • Each of these clamps consists of a work-supporting plate and a cooperating clamping foot between which and the plate the work'is clamped.
  • Fig. 1 is a fragmentary side elevation, partly in section, of a sewing machine including a workclamping mechanism which embodies the present invention.
  • FIG. 2 is a fragmentary plan view of the machine, partly in secti0n,'and with the stitch frame thereof omitted for better illustration of the work-clamping mechanism underneath.
  • Figs. '3 and 4 are enlarged sections, taken on the lines 33 and 44, respectively, of Fig. 2.-
  • Fig. 5 shows perspectively the disassembled parts of a clamping foot of the work-clamping mechanism.
  • I Fig. 6 is a fragmentary plan view of a modified portion of the work-clamping mechanism.
  • Fig. 7 is a section taken on the line 1-1 of Fig. 6.
  • Fig. 8 is a fragmentary plan view of another modified portion of the work-clamping mechanism. v 1
  • Fig. 9 is a section taken on the line 9-9, Fig. 8.
  • Fig. 10 illustrates the actionof the present work-clamping mechanism on a garment having a'hem.
  • a buttonhole sewing machine of a wellknown type, comprising a stationary bed frame or Work support I5 which carries the work-clamping mechanism hereinafter described, a. movable stitch frame or head I 6, with the stitching mechanism, and mechanism on the stitch frame for cutting a buttonhole or the like.
  • the stitch frame It is movable longitudinally over the bed frame I5 to bring the stitching and cutting mechanisms alternately into operative relationship with the work, and is also movable both longitudinally and laterally to position the stitches in accordance with the work to be performed, bymeans of feeding mechanism operated by a main cam I! which is carried by the stitch frame .IG and rotated by any suitable power driven shaft (not shown).
  • the stitching mechanism comprises a needle [9 carried by a needle bar 28, and looper mechanism 14 which may be substantially as shown in the patent to Grip No. 1,905,854, April 25, 1933, said needle bar and said looper mechanism being carried by upper and lower turrets 2
  • said cycle also including a cutting operation which may be performed either before or after the stitching operation according to the design or adjustment of the machine.
  • the work clamping mechanism consists of two relatively movable work clamps 35 and 35, each comprising a work-receiving clamp plate Elwith a matrix 31a and a cooperating clamping foot 38 whichis carried by a slightly resilient arm 39, pivotally mounted at 48 on a block 4
  • the clamp plates 3? are slidably supported on theupper machined surface 42 of the bed frame I5.
  • the clamp plates 3'!- are guided for linear movement at right angles to the longitudinal axis III-112 (Fig. 2) of the line of stitching which is determined by the design of the feed mechanism. Hence, the clamp plates 3l are separated equal
  • the lower turret 22 also carries a block or cam 48 (Figs.
  • the spreader cam 48 is so constructed and arranged on the'stitch frame l6 that it will have completely cleared the followers 511 of the clamp plates 3'1 whenthe stitch frame arrives in the stitching position.
  • mechanism fully shown and described in the patenttoCollins, No. 2,292,432, August 11, 1942 automatically holds the clamp plates in, their maximum separated position until the end of the operating cycle.
  • the clamping feet 38 are automatically lowered by conventional means (not shown) and pressed against the work W on the clamp plates 31 until the end of the operating cycle.
  • each clamping part 62 is located adjacent one end of its respective clamping part 60 and suitably secured to one end of a leaf spring 64 which lies normally flat against the top surface 65. of said part 60 and is in turn secured with its other end to said top surface by a screw 66 or the like;
  • Each clamping part 60 has on its top surface two spaced lugs 68 for the reception of a screw 10 by means of which said part is pivotally mounted on its respective clamp arm 39.
  • each clamping part 60 extends between, and abuts the adjacent side walls of, the spaced mounting lugs 68 thereof, whereby the clamping part 62 carried by said leafspring is rendered immovable relative to its respective clamping art 60 in all directions except toward and away from the work.
  • the laterally alined yielding parts 62 oftheclamping feet 38 are located on opposite sides of the region where the stitching mechanism sew around the eye end of the buttonhole, while the parts 60 of said clamping feet are located on opposite sides of the region where the stitching mechanism sews along the straight sides of thebuttonhole. It is then obvious that the material will be less stretched or spread across the eye end of the buttonhole than across the straight sides thereof.
  • the workengaging surfaces 80 of the yielding clamping parts 62 as well as the opposite surface portions 82 of the matrices 31a on the clamp plates 31 are preferably plane (Figs.
  • the deformations 84 are preferably teeth arranged in orderly rowson the work-engaging surfaces of the clamping parts 60, while the deformations 86 on the matrices 31a. are preferably formed by knurling.
  • the surface portions ofgthe matrices 31a opposite the yielding parts 62 of the clamping feet 38 may be laterally ridged to provide a multiplicity of ribs 90 (Figs. 6 and 7), or they may be provided with teeth 92 arranged in the fashion shown in Figs. 8 and 9, for instance.
  • an additional workclamping part may be located at'the other end of each clamping part 60 and yieldabl mounted on the latter in the same manner in whichthe yieldable parts 62 are mounted on said clamping parts 60.
  • These additional work-clamping parts would naturally be located on opposite sides of the region where the stitching mechanism sews around the buttonhole end which is opposit the eye end thereof. As such an arrangement appears self-evident, it is not deemed necessary to show the same in the drawings.
  • the reduced spread of the material adjacent the ends of a buttonhole also avoids a severe strain on the material at the ends of the buttonhole slit and,
  • each clamp- -ing part 60 may make up the excess length of each clamping foot 38 from adjacent the buttonhole end opposite the eye end thereof.
  • the yielding end parts 62 of the clamping feet 38 are of further advantage where a button hole extends near or into the hem I00 of a, garment, such as a vest. In that case the end parts 62 yield in the manner shown in Fig. 10, while the parts 60 of the clamping feet uniformly press against the fiat material. 7
  • a work clamp comprising two sidewise arranged clamping units relatively movable laterally away-from each other to' spread the clamp, each unit consisting of a work-supporting device and a clamping device closable thereagainst to clamp the work, two cooperating lengths of the clamping surfaces of each clamping unit being plane and the remaining clamping surfaces thereof being provided with work-gripping deformations, and said plane surfacelengths of the.
  • clamping units being laterally aligned and one ofsaid plane cooperating surface lengths of each clamping unitbeing yieldable away from the clamped work.
  • ' lf'A work clamp comprising two sidewise'arranged clamping units movable laterally away from each other to spread the'clamp, each unit consisting of a work support and a clamping member closable thereagainst to clamp the work, certain laterally aligned lengths of the workengaging surfaces of said clamping members being plane and yieldable away from the clamped work relative to the remaining lengths thereof which are provided with work-gripping deformations, and the portions of the work-engaging surface of said Work support cooperating with said plane and remaining lengths, respectively, of the surfaces of the clamping members being laterally ridged and provided with work-gripping deformations, respectively.
  • a work clamp comprising two sidewise arranged clamping units movable laterally away mm ach other to spre d the o e-ma ach unit .:o.n-si, tlne of a o k support and a cla p membe c osab e t ereasa o cl ims the k, certain alaterally aligned lengths of the work.- ns a ns surfaces of id.
  • a buttonhole clamp comprising two clampi-ng units on opposite sides of a buttonhole in the work having an eye end, each unit consisting of a work support and ,a work clamping member closable thereagainst to clam-p the work and said units being movable away from each other to M spread the clamped work, each clamping member comprising two parts of which one part extends along a straight side of the huttonhole and the other part is adjacent th ye end thereof and carried by said one part yieldable away from the clamped work.
  • work clamping mechanism including two clamp sections adaptedrespectively to clamp the work at opposite sides of the buttonhole slit and means for relatively moving said sections away from one another to apply a spreading tension to the work, said sections comprising means for causing substantially constant spreading tension throughout the length of the slit and means for causing a different spreading tension adjacent an end of the slit.
  • work clamping mechanism including two clamp sections adapted respectively to clamp the work at opposite sides oi the buttonhole slit and means for relatively movingsaid sections away from one another to apply a spreading tension to the work, said sections comprising means for causing substantially constant spreading tension throughout the length of the slit and means for causing a less spreading tension adjacent an end of the slit.
  • work clamping mechanism including two clamp sections adapted respectively to clamp the work at opposite sides of the buttonhole slit and means for relatively moving said sections away from one another to apply a spreading tension to the work, said clamp sections consisting each of more than two work-engaging par-ts so cooperating as to grip the work with a clamping pressure which is difiierent in different regions longitudinally of the .buttonhole slit.
  • work clamping mechanism including two. clamp sections adapted respectively to clamp the work at opposite sides of the ,buttonhole slit, each of said sections comprising cooperating clamping eleopposite sides of the buttonhole slit, each of said sections comprising cooperating clamping'elements, and means for relatively moving said sections away from one another by a substantially even or constant amount throughouttheir length, said clamping elements comprising means for permitting slip-page of the ,work with respect to said clamp sections in the region adjacent an end of the slit when said sections are moved, and means for gripping the work more firmly along the edges of the slit.
  • work clamping mechanism including two clamp sections adapted respectively to clamp the work at opposite sides of the buttonhole slit, each of said sections comprising cooperating clamping elements, and means for relatively moving said sections away from one another by a substantially even or constant amount throughout their length, one of the element of each of said sections comprising two parts of which one part is yieldingly mounted on the other part.
  • work clamping mechanism including two .clamp sections adapted respectively to clamp the work at opposite sides of the buttonhole slit, each of said sections comprising cooperating clamping elements, and means for relatively moving said sections away from one another by a substantially even or constant amount throughout their length, one of the elements of each of said sections having a portion for engaging the work along the edge of the slit and a portion for engaging the work in a region adjacent the end of the slit, said last named portion being yieldingly mounted on said first named portion.
  • work clamping mechanism including two clamp sections adapted respectively tocIamp the work at opposite sides of the buttonhole slit, each of said sections comprising a plate and a cooperating clamping foot, and means ior relatively moving said sections away from one another by a substantially even or constant amount throughout their length, the clamping foot of each of .said
  • sections having a portion for engaging the work .along the edge of the slit and a portion for engaging the work in a region adjacent an end of the slit and a flat leaf spring connecting said last named portion with said first named portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Rolling Contact Bearings (AREA)
  • Sewing Machines And Sewing (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US362985A 1940-10-26 1940-10-26 Work clamping mechanism Expired - Lifetime US2346241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US362985A US2346241A (en) 1940-10-26 1940-10-26 Work clamping mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US362985A US2346241A (en) 1940-10-26 1940-10-26 Work clamping mechanism
SE85062 1962-01-26

Publications (1)

Publication Number Publication Date
US2346241A true US2346241A (en) 1944-04-11

Family

ID=20257199

Family Applications (2)

Application Number Title Priority Date Filing Date
US362985A Expired - Lifetime US2346241A (en) 1940-10-26 1940-10-26 Work clamping mechanism
US253362A Expired - Lifetime US3220783A (en) 1962-01-26 1963-01-23 Bearing arrangement for rotating bunch rollers in cigar wrapping mechanisms

Family Applications After (1)

Application Number Title Priority Date Filing Date
US253362A Expired - Lifetime US3220783A (en) 1962-01-26 1963-01-23 Bearing arrangement for rotating bunch rollers in cigar wrapping mechanisms

Country Status (5)

Country Link
US (2) US2346241A (da)
DK (1) DK108711C (da)
ES (1) ES284510A1 (da)
FR (1) FR631906A (da)
GB (1) GB960351A (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112206085A (zh) * 2020-10-18 2021-01-12 南京浩衍鼎业科技技术有限公司 一种颅内生物可降解支架显影点的快速剪切及装配系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB860810A (en) * 1957-01-22 1961-02-08 Ici Australia Ltd Method and apparatus for the production of hollow articles
JPS53145831A (en) * 1977-05-26 1978-12-19 Central Glass Co Ltd Electric welding of glass plate

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT39876B (de) * 1908-10-30 1909-11-25 Karl Strzempek Rollenlagerung, insbesonders für die Führungsrollen der Zugleitungen von Eisenbahnsignalen.
US1041900A (en) * 1911-11-02 1912-10-22 John T Norris Roller-bearing.
US1105951A (en) * 1912-01-05 1914-08-04 Scott Paper Co Fixture for supplying paper, &c., from rolls.
CH71680A (fr) * 1914-06-09 1916-02-01 Goetschel & Co Distributeur de feuilles de papier
US1362910A (en) * 1919-01-27 1920-12-21 Buzz Engineering Company Conveyer-roller
US1425561A (en) * 1920-08-14 1922-08-15 Standard Conveyor Co Conveyer roller
US1589739A (en) * 1925-12-03 1926-06-22 Shawmut Eng Co Tube frame for tuft weaving
US1802708A (en) * 1928-09-12 1931-04-28 Int Projector Corp Roller
US1889174A (en) * 1930-04-04 1932-11-29 Schloemann Ag Conveyer roller
US2046550A (en) * 1935-01-15 1936-07-07 Du Pont Rayon Co Thread winding mechanism
US2141810A (en) * 1935-12-16 1938-12-27 Dodge Mfg Corp Roll shaft support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112206085A (zh) * 2020-10-18 2021-01-12 南京浩衍鼎业科技技术有限公司 一种颅内生物可降解支架显影点的快速剪切及装配系统
CN112206085B (zh) * 2020-10-18 2022-06-03 南京浩衍鼎业科技技术有限公司 一种颅内生物可降解支架显影点的快速剪切及装配系统

Also Published As

Publication number Publication date
GB960351A (en) 1964-06-10
DK108711C (da) 1968-01-29
US3220783A (en) 1965-11-30
ES284510A1 (es) 1963-08-16
FR631906A (fr) 1927-12-29

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