US1910191A - Recording device - Google Patents

Recording device Download PDF

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Publication number
US1910191A
US1910191A US554006A US55400631A US1910191A US 1910191 A US1910191 A US 1910191A US 554006 A US554006 A US 554006A US 55400631 A US55400631 A US 55400631A US 1910191 A US1910191 A US 1910191A
Authority
US
United States
Prior art keywords
disc
speed
cord
flexible
piston
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
US554006A
Other languages
English (en)
Inventor
James R M Tisdale
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.)
Individual
Original Assignee
Individual
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
Priority to FR719953D priority Critical patent/FR719953A/fr
Application filed by Individual filed Critical Individual
Priority to US554006A priority patent/US1910191A/en
Application granted granted Critical
Publication of US1910191A publication Critical patent/US1910191A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/12—Recording devices
    • G01P1/122—Speed recorders
    • G01P1/125—Speed recorders with recording discs

Definitions

  • the principal objects of this invention are to provide a device which will present an arcuate record of the movement of a mechanism to which it is applied and which is particularly applicable to motor vehicles, providing a record of the travelling speed of the vehicle over a predetermined distance.
  • a further object is to devise a compact and durable mechanism which will be easily applied to the mechanism with which it is to be used and which will function automatically in recording the performance of the mechanism.
  • Figure 1 is an enlarged face view of the recording device.
  • Figure 2 is a vertical mid-section and ele- V vational view of the device.
  • Figure 8 is a horizontal sectional view of the device taken on the line 3-3 of Figure 2.
  • Figure 4 is an enlarged elevational detail of the travelling means for locating ⁇ the marking element.
  • Figure 5 is a perspective detail, on a reduced scale, of the flexible disc member on he surface of which a graph scale is marked.
  • Figure 6 is a plan view of the member illustrated in Figure 5, laid flat.
  • Figure 7 is a reduced elevational view of the inner face of the glass dise.
  • a substantially cylindrical sheet metal casing 1 is mounted on a circular base 2 and a flanged disc 3 is secured therein against the annular shoulder 4:.
  • a transverse slot 5 is formed in the disc 3 at or slightly above the centre, said slot extending for the major part of the width of the disc.
  • a disc 6 of leather or suitable flexible fabric is provided with an arrangement of radial graph lines 7 and concentric graph lines 8 and has a circular hole 9 in the centre.
  • rfhis 60 flexible disc is doubled transversely as shown in Figure 5 and is threaded through the slot 5 in the disc or well 3 so that one-half of the flexible disc is on the outer side of the upper half of the disc 3 and the other half is dis- 6 posed on the inner side thereof.
  • Holes 10 are formed in the flexible disc described adjacent to its periphery, said holes being spaced at regular distances apart in a concentric path.
  • a shaft 11 is arranged axially of the casing 1 and extends through the centre of the fixed disc 3 and its outer end is formed with a squared portion 12 and a head 13.
  • a glass disc 14, provided with a squared hole in the centre thereof is mounted on the squared end of the shaft and is turned thereby.
  • Pins 15 forming part of or secured in the glass disc 14 are spaced apart distances equal to the spacing of the holes l() in the flexible disc. These pins engage with the holes in the flexible disc and drive it so that it slips around the upper edge of the slot 5 in the disc 3 and there is always one-half of the surface in close co-operative proximity to the inner face of the glass disc as it rotates.
  • Eyes 16 are fixed on the disc 3 adjacent to the ends of the slot and an endless flexible cord 17 is rove through same.
  • rod 18 is arranged close to the inner side of the disc 3 below the slot 5 and on this rod is slidably mounted an arm 19 which extends horizontally and parallel with the rod 18 and has an eye 20 on its extremity through which the cord 17 is rove. This eye extends close to the doubled edge of the disc 6 and directs the cord in between the glass disc and the adjacent semi-circular portion of said disc.
  • Tithin the casing 1 and preferably forming a part of the base 2 is a horizontally arranged cylinder 2l in which a piston 22 operates.
  • the rod 23 of the piston extends from the inward end of the cylinder through a gland 24 and it has mounted on its outer end a fork member 25, one branch 26 of which is connected to the arm 19 carrying the eye 20.
  • the piston 22 is formed with a tapered hole 27 therethrough through which a taper pin 28 secured to the cylinder end extends.
  • the diameters of the taper' pin and hole are such that as the piston moves toward the inner end of its cylinder the passage around the taper pin increases in area and permits the flow of fluid therethrough in an increasing ratio.
  • a port 29 in the outward end of the cylinder casing directs fluid thereinto to force the piston toward the inner end.
  • This port leads from a gear pump 30 mounted in the main casing structure which is part of the base.
  • the pump draws a supply of fluid from a snmp 31 in the casing and a return duct 3 connects the inward end of the cylinder with the sump so that fluid flowing through the piston orifice returns to the sump and passes again, under the action of the pump, to the pressure side of the piston.
  • the pump is operated by a ⁇ lexible shaft 33 which is connected by suitable. means to the drive shaft of the motor car or other mechanism.
  • a worm 34 on the pump shaft meshes with a worm gear on the shaft 11 and the gear structures are such that the glass disc is rotated slowly but in direct ratio to the number of revolutions of the drive shaft of the machine. and in a motor car, to the distance travelled.
  • the pump 30 its ports and the cylinder are so designed that the fluid pumped into the cylinder moves the piston in direct ratio to the speed of movement of the shaft, or the vehicle.
  • the leak port provided in the piston which alters as the piston moves, permits the piston to remain stationary at any place in its travel while the speed of the shaft or vehicle remains constant, but it moves back and forth in accordance with the variation in speed.
  • the flexible cord forms a graph, continuously changing at the ends, but recording always, for a predetermined movement of the machine to which it is applied, an accurate record of the speed achieved in such movement.
  • a speed indicating drum 35 is operated thereby through the medium of a gear rack 36, connected to the fork attachment to the piston, and a gear 37 secured to the drum spindle 38.
  • a suitable arrangement of registering discs 39 is provided, which may be operated in any suitable manner from the drum spindle 38 to register the revolutions of the shaft of the mechanism being recorded on the distance travelled.
  • the graph shows at a glance the speed of tra-vel at any instant and the speed travelled for the last half or quarter mile is recorded thereon.
  • a device adapted to indicate and record the performance of a mechanism in respect to distance of travel and speed comprising a rigid transparent disc rotatably connected with a mechanism ⁇ the speed of which is to be recorded, a circular flexible disc having a semi-circular portion thereof supported in close (zo-operative association with the surface of said disc and moving in unison therewith, a flexible endless marking element arranged between said disc and its co-operating movable surface and held thereby in a visible position, and means operated by the variable movement of the device, the speed of which is being recorded, for placing said marking element as the movement of the c0- operative members progresses.
  • a device adapted to indicate and record the performance of a mechanism in respect to distance of travel and speed comprising a rigid transparent disc driven at a speed proportional to the speed of the device, the speed ,of which is to be indicated, a flexible circular disc doubled into semi-circular form and having one semi-circular part thereof supported in close (2o-operative association with a semi-circular part of said disc, means for driving said rigid and flexible discs so that the parts arranged in close association nieve in unity, an endless marking element arranged between the closely associated porllo' se L
  • a device adapted to indicate and record the performance of a mechanism in respect to distance of travel and speed comprising a rigid transparent disc driven at a speed proportional to the speed of the device, the speed of which is to be indicated, a thin fiexible circular disc doubled around a supporting wall and having one semi-circular portion supported by said wall in close cooperative association with a semiecircular part of said rigid transparent dise, said flexible circular disc having equally spaced holes disposed in a concentric path, and pins eX- tending from said rigid disc entering the holes in said flexible disc to drive the latter in unison therewith.
  • a device adapted to indicate and temporarily record the performance of a mechanism, having an endless graph cord or the like, comprising retaining means between which said graph cord is adapted to be placed, said retaining means comprising in part rigid latplane disc of transparent material rotatably supported behind which the cord is adapt-ed to be placed and in part means cooperative With a semi-circular portion of the disc to temporarily support the placed portions of the cord in its graph form, means for positioning said cord between said iiat plane disc and said retaining means in accordance with the speed of operation of the mechanism to which said device is attached, and means for rotating said flat plane disc in accordance with the distance travelled.
  • a device adapted to indicate and temporarily record the performance of a mechanism having an endless graph cord or the like comprising retaining means between which said graph cord is adapted to be placed, said retaining means comprising in part a rigid flat plane disc of transparent material rotatably supported behind which the cord is adapted to be placed in part means eo-operating with a semi-circular portion of the disc to temporarily support the placed portions of the cord in its 0raph form, means for positioning said cord between said flat plane disc and said retaining means in accordance with the speed of operation of the mechanism to which said device is attached, means for rotating said flat plane disc on its axis in accordance with the distance travelled, and means forming an operative drive connection between said rotating dise and said temporary supporting means to effect their operation in unison.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
US554006A 1931-07-10 1931-07-30 Recording device Expired - Lifetime US1910191A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR719953D FR719953A (fr) 1931-07-10 1931-07-10 Perfectionnements aux appareils enregistreurs
US554006A US1910191A (en) 1931-07-10 1931-07-30 Recording device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR719953T 1931-07-10
US554006A US1910191A (en) 1931-07-10 1931-07-30 Recording device

Publications (1)

Publication Number Publication Date
US1910191A true US1910191A (en) 1933-05-23

Family

ID=24211675

Family Applications (1)

Application Number Title Priority Date Filing Date
US554006A Expired - Lifetime US1910191A (en) 1931-07-10 1931-07-30 Recording device

Country Status (2)

Country Link
US (1) US1910191A (fr)
FR (1) FR719953A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549150A (en) * 1945-01-10 1951-04-17 Charles C Morrison Printing device for producing graphs, prints, or the like
US4533962A (en) * 1982-08-05 1985-08-06 Decker Ronald R Vehicle performance detection and recording apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549150A (en) * 1945-01-10 1951-04-17 Charles C Morrison Printing device for producing graphs, prints, or the like
US4533962A (en) * 1982-08-05 1985-08-06 Decker Ronald R Vehicle performance detection and recording apparatus

Also Published As

Publication number Publication date
FR719953A (fr) 1932-02-18

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