US478398A - Andrew c - Google Patents

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Publication number
US478398A
US478398A US478398DA US478398A US 478398 A US478398 A US 478398A US 478398D A US478398D A US 478398DA US 478398 A US478398 A US 478398A
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Prior art keywords
lever
pin
treadle
clutch
pawl
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Expired - Lifetime
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20558—Variable output force
    • Y10T74/2057—Variable input leverage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents
    • Y10T74/20666—Lever engaging

Definitions

  • My invention relates to improvements in clutch-treadles, in which the treadle is connected by a link to the clutch and is pressed upon to start the machine to which the clutch is attached and released to stop thegnachine; and the objects of my improvements are, first, to construct a clutch-treadle which is complete in itself and only requires bolting to the floor to be in readiness to operate; second, to construct a clutch-treadle that is capable of any reach within the usual limits without altering its length of stroke; third, to construct a clutch-treadle that is entirely and conveniently underthe controlof theoperator whether the clutch is used once for each cycle or once for several cycles.
  • Figures 1 and 2 are side views of the clutchtreadle adjusted for different reaches, the front side of the holder being broken away to show interior.
  • Fig. 3 is a view looking on top of Fig. 2 with the pawl 9 removed. 7
  • the holder 1 cast in one piece, constitutes the frame of the machine and is provided with a flangeor base with holes for bolting to floor.
  • a treadle-lever 2 shaped at one end to receive the operators foot and slotted at the other end,-is fulcrumed about midway upon a pin 5 in the frame 1.
  • a pawl 9 swings upon a pin a in the frame 1 and engages with a projecting tooth c on the treadle-lever 2 when said lever is pushed way down.
  • a horn extending from the tip of the pawl 9 is provided for lifting said pawl when it is required to disengage the pawl from the treadle-lever.
  • the lever 3 may be made of any length to suit circumstances, the pin 4 being placed so as to make the ratio of the arm 4 6 to the arm 4 7 the samein every case.
  • Figs. 1 and 2 show the lever 3 of different lengths; but the chord 7 8, which subtends the are generated by the pin 7, is the same length in both figures.
  • What I claim as my invention is- 1;
  • a clutch-treadle the combination of a frame or holder 1, a lever 3, supported by the holder, a pin 4, said lever 3 being provided with a series of holes adapted to receive the pin 4, whereby the fulcrum may be located so as to preserve a constant ratio between the two arms of the lever 3, and a pin 6, extending through one end of the lever 3, a lever 2, fulcrumed upon a pin 5, supported by the frame 1, shaped at one end to receive a persons foot and slotted at the other end to receive the pin 6 in the end of the lever 3, whereby motion is imparted from one lever to the other, substantially as described, for the purpose specified.
  • a clutch-treadle the combination of a frame or holder 1, a compound lever 2 and 3, fulcrumed upon pins supported by the frame 1, said lever 2, provided with a projecting tooth c, and a pawl 9, swinging upon a pin a, supported by the holder 1 and adapted to catch under said tooth '0, whereby the lever 2 is held down, said pawl 9 being provided with a horn extending from one end, whereby said pawl may be raised to release the lever 2, all substantially as described.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Operated Clutches (AREA)

Description

(No Model.)
A. O. CAMPBELL.
OLUTGH TREADLE.
No. 478,398. Patented July 5, 1892.
U ITE STATES PATENT OFFICE.
WATERBURY FARREL FOUNDRY PLACE.
AND MACHINE COMPANY, OF SAME CLUTCH-TREADLE.
SPECIFICATION forming part of Letters Patent No. 478,398, dated July 5, 1892.
Application filed March 30, 1892.
To all whom it may concern:
Be it known that 1, ANDREW O. CAMPBELL, of Waterbury, in the county of New Haven and State of Connecticut, have invented a new Improvement in Clutch Treadles, of which the following is a specification.
My invention relates to improvements in clutch-treadles, in which the treadle is connected by a link to the clutch and is pressed upon to start the machine to which the clutch is attached and released to stop thegnachine; and the objects of my improvements are, first, to construct a clutch-treadle which is complete in itself and only requires bolting to the floor to be in readiness to operate; second, to construct a clutch-treadle that is capable of any reach within the usual limits without altering its length of stroke; third, to construct a clutch-treadle that is entirely and conveniently underthe controlof theoperator whether the clutch is used once for each cycle or once for several cycles. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figures 1 and 2 are side views of the clutchtreadle adjusted for different reaches, the front side of the holder being broken away to show interior. Fig. 3 is a view looking on top of Fig. 2 with the pawl 9 removed. 7
Similar letters and figures refer to similar parts.
The holder 1, cast in one piece, constitutes the frame of the machine and is provided with a flangeor base with holes for bolting to floor. A treadle-lever 2, shaped at one end to receive the operators foot and slotted at the other end,-is fulcrumed about midway upon a pin 5 in the frame 1. A pawl 9 swings upon a pin a in the frame 1 and engages with a projecting tooth c on the treadle-lever 2 when said lever is pushed way down. A horn extending from the tip of the pawl 9 is provided for lifting said pawl when it is required to disengage the pawl from the treadle-lever. A lever 3, having a pin 6 at one end which enters the slot in the end of the treadle-lever 2,
Serial No. 427,127. (No modeLl is provided with a number of pin-holes, any
one of which may receive the pin 4 in the frame 1 and turn upon it as a fulcrum, the two levers thus connected forming a compound lever. The other end of the lever 3 is connected by a pin 7 to the link 10, which is in connection with the clutch.
The lever 3 may be made of any length to suit circumstances, the pin 4 being placed so as to make the ratio of the arm 4 6 to the arm 4 7 the samein every case. Figs. 1 and 2 show the lever 3 of different lengths; but the chord 7 8, which subtends the are generated by the pin 7, is the same length in both figures.
What I claim as my invention is- 1; In a clutch-treadle, the combination of a frame or holder 1, a lever 3, supported by the holder, a pin 4, said lever 3 being provided with a series of holes adapted to receive the pin 4, whereby the fulcrum may be located so as to preserve a constant ratio between the two arms of the lever 3, and a pin 6, extending through one end of the lever 3, a lever 2, fulcrumed upon a pin 5, supported by the frame 1, shaped at one end to receive a persons foot and slotted at the other end to receive the pin 6 in the end of the lever 3, whereby motion is imparted from one lever to the other, substantially as described, for the purpose specified. v
2. In a clutch-treadle, the combination of a frame or holder 1, a compound lever 2 and 3, fulcrumed upon pins supported by the frame 1, said lever 2, provided with a projecting tooth c, and a pawl 9, swinging upon a pin a, supported by the holder 1 and adapted to catch under said tooth '0, whereby the lever 2 is held down, said pawl 9 being provided with a horn extending from one end, whereby said pawl may be raised to release the lever 2, all substantially as described.
ANDREW I C. CAMPBELL.
Witnesses:
EDWARD S. BEACH, G O. ROWBOTTOM.
US478398D Andrew c Expired - Lifetime US478398A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976555A (en) * 1957-03-18 1961-03-28 Trico Products Corp Windshield wiper motor transmission system
US3355965A (en) * 1965-10-28 1967-12-05 Lawrence A Beaudry Brake lock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976555A (en) * 1957-03-18 1961-03-28 Trico Products Corp Windshield wiper motor transmission system
US3355965A (en) * 1965-10-28 1967-12-05 Lawrence A Beaudry Brake lock

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