US322813A - Stone-lifter - Google Patents

Stone-lifter Download PDF

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Publication number
US322813A
US322813A US322813DA US322813A US 322813 A US322813 A US 322813A US 322813D A US322813D A US 322813DA US 322813 A US322813 A US 322813A
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United States
Prior art keywords
stone
lifter
frame
sides
bar
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Expired - Lifetime
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00—Gripping heads and other end effectors
    • B25J15/02—Gripping heads and other end effectors servo-actuated
    • B25J15/0206—Gripping heads and other end effectors servo-actuated comprising articulated grippers
    • B25J15/0226—Gripping heads and other end effectors servo-actuated comprising articulated grippers actuated by cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears

Definitions

  • My invention relates to an improvement in stone-litters, the object being to provide a lifter of simple and durable construction and ⁇ of Asmall initial cost; and to that end my invention consists in the peculiar construction and arrangement of parts, as hereinafter fully set forth.
  • I provide a frame, A, in two parts, and secured together by bolts c, operated by a sleeve-nut, b, placed somewhat below the middle of the frame A. At or near the lower ends of the frameAareplacedself-adjustingpiecesc,which will conform to any irregularity in the sides of the stone B. A short distance above the bolts c the inside of the frame A inclines inwardlyuntil it reaches the top. A groove, d, is cut in both sides of the frame, commencing below the beginning of the inclined surfaces e. Between the frame A is placed a cross-bar, g, with tongues h at either end, which, when placed in position, allow the bar g to move vertically in the grooves d. An eyebolt, i,
  • the lower part of the frame A is placed on either side of the stone B or other substance to be raised.
  • the two sides of the frame A are brought together by turning the sleevenut b.
  • the cross bar g is first let down until the tongues h rest in the bottom of the grooves d, the sides of the frame A being brought together as far as the adjusting-pieces c will admit.
  • the crane or elevator is now put in motion, and thecross-bar g moves up the grooves d, acting as a wedge, while the sides of the frame A are levers, of which the bolts a are the fulcrums. It is obvious that the greater the weight to be lifted the tighter the sel f-adjusting pieces c will clutch the stone.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Revetment (AREA)

Description

D. ENGLISH.
STONE LIPTBR.
(No Model.)
PatentedJuIy 21, 11.885.v
mmme
UNITED STATES PATENT GEEICE,
DANIEL ENGLISH, OF BROOKVILLE, PENNSYLVANIA.
STONE-LIFTER.
SPECIFICATIQN forming part of Letters Patent No. 322,813, dated July 21, 1885.
Application filed May 29, 1885.
- clear, and exact description of the invention,
such as will enable others skilled in the art to which it pertains to make and use it,l` reference being had to the accompanying drawing, which forms part of this specification.
My invention relates to an improvement in stone-litters, the object being to provide a lifter of simple and durable construction and` of Asmall initial cost; and to that end my invention consists in the peculiar construction and arrangement of parts, as hereinafter fully set forth.
In the accompanying drawing I show the front elevation of myV improved stone-lifter.
To put my invention into practice, I providea frame, A, in two parts, and secured together by bolts c, operated by a sleeve-nut, b, placed somewhat below the middle of the frame A. At or near the lower ends of the frameAareplacedself-adjustingpiecesc,which will conform to any irregularity in the sides of the stone B. A short distance above the bolts c the inside of the frame A inclines inwardlyuntil it reaches the top. A groove, d, is cut in both sides of the frame, commencing below the beginning of the inclined surfaces e. Between the frame A is placed a cross-bar, g, with tongues h at either end, which, when placed in position, allow the bar g to move vertically in the grooves d. An eyebolt, i,
(No model.)
is secured to the cross-bar g, through which the hook k onthe chain of any crane or elevator is secured.
To use my improved stone-lifter, the lower part of the frame A is placed on either side of the stone B or other substance to be raised. The two sides of the frame A are brought together by turning the sleevenut b. The cross bar g is first let down until the tongues h rest in the bottom of the grooves d, the sides of the frame A being brought together as far as the adjusting-pieces c will admit. The crane or elevator is now put in motion, and thecross-bar g moves up the grooves d, acting as a wedge, while the sides of the frame A are levers, of which the bolts a are the fulcrums. It is obvious that the greater the weight to be lifted the tighter the sel f-adjusting pieces c will clutch the stone.
Having thus fully described my invention,
.what I claim, and desire to secure by Letters own I have hereto affixed my signature in presence of two witnesses.
. DANIEL ENGLISH. Vitnesses:
W. C. BARE, A. J. PEARsoN.
US322813D Stone-lifter Expired - Lifetime US322813A (en)

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US322813A true US322813A (en) 1885-07-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515666A (en) * 1945-08-17 1950-07-18 Alba H Rice Device for lifting bricks and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515666A (en) * 1945-08-17 1950-07-18 Alba H Rice Device for lifting bricks and the like

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