US2297291A - Grappling or pulling tool - Google Patents

Grappling or pulling tool Download PDF

Info

Publication number
US2297291A
US2297291A US327041A US32704140A US2297291A US 2297291 A US2297291 A US 2297291A US 327041 A US327041 A US 327041A US 32704140 A US32704140 A US 32704140A US 2297291 A US2297291 A US 2297291A
Authority
US
United States
Prior art keywords
jaws
tool
levers
grappling
flange
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
US327041A
Inventor
Alton T Danielson
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
Application filed by Individual filed Critical Individual
Priority to US327041A priority Critical patent/US2297291A/en
Application granted granted Critical
Publication of US2297291A publication Critical patent/US2297291A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/422Gripping members engaging only the external or internal surfaces of the articles actuated by lifting force
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S294/00Handling: hand and hoist-line implements
    • Y10S294/902Gripping element

Definitions

  • This invention relates to a grappling or lifting tool. It is desirable in such a tool to have gripping jaws arranged to exert great pressure on the object grasped, which pressure preferably increases with the pulling effort or force. It is also desirable to have a grappling tool having opposed jaws mounted to swing so that they can come into parallel or substantially parallel relation when an object is grasped. It is also desirable to have a grappling tool that can be moved vertically along the side of a wall or surface to engage an object between the jaws thereof. 7
  • It is a further object of the invention to provide a grappling tool comprising a pair of levers hinged together adjacent their ends, said levers having projections extending laterally at the same side thereof to which are connected swinging jaws, said jaws thus being oifset at one side of said levers.
  • Fig. 1 is a perspective view largely in side elevation of the tool
  • Fig. 2 is a vertical section taken on line 2-2 of Fig. 1 as indicated by the arrows;
  • Fig. 3 is a horizontal section taken on line 33 of Fig. 1 as indicated by the arrows;
  • Fig. 4 is a perspective view of one of the jaws used.
  • a lever Ill is shown and while this lever could be variously formed, in l the embodiment of the invention illustrated it is shown as made of a substantially flat bar rectangular in transverse cross section.
  • One end of the lever is increased in thickness and the same has a slot, Illa extending therethrough.
  • Lever I has a flange lllb extending laterally from one flat side thereof at its lower end.
  • a flange-like lug me extends perpendicularly to flange Hlb substantially parallel to th adjacent flat side of said lever and another flange I M extends between lug I00 and the adjacent side of lever I0.
  • lever II is provided, also illustrated as formed from a substantially flat bar rectangular in transverse cross section, said lever l-I extending through slot Illa.
  • Levers l0 and H are pivoted together by a countersunk pivot rivet l2.
  • Lever H at its lower end has a flange Hbprojecting from one side thereof in the same direction as does flange lllb.
  • a flange-like lug Hc extends perpendicularly to flange l lb at the outer side of flange Nb and a flange Hd extends perpendicularly to flange Ilb between lug He and the adjacent side of lever I I, said flange being extended upwardly in tapered formation as a rib.
  • flanges l 00 and I la are in substantially the same vertical plane.
  • Levers l0 and II have pivoted thereto respectively jaws l3 and I4.
  • Jaw l3 has a fiat rectangular plate-like portion from one side of which projects a lug l3a disposed between lug' I la and the adjacent side of lever II, the same being pivotally connected to lever II by the pivot rivet l5.
  • Pivot rivet I5 is countersunk at the outer side of lug llc.
  • Jaw l3 has an outer gripping face l3b shownas corrugated and having V-shaped ribs extending substantially horizontally therein.
  • Jaw I4 has a lug Ma disposed between lug 10c and the adjacent side of lever Ill and is connected to said lever by a pivot rivet l5.
  • Pivot rivet I6 is countersunk at the outer side of lug lllc.
  • Jaw l4 also has a rectangular plate-like portion having a gripping surface or face Mb illustrated as being formed with substantially horizontally V-shaped ribs.
  • Levers l0 and II have pivotally connected thereto at their upper ends respectively links I! and i8, said links having their other ends in alinement and disposed between the arms of a yoke memher I 9.
  • Links I! and I8 are pivotally connected to the lower ends of said arms by a pivot rivet 20.
  • is disposed on rivet 20 between links I! and I8.
  • the yoke member I9 is of inverted U-shape and its bight portion is disposed in a ring 22 connected to the lower end of a chain 23, which chain will be connected to
  • pling tool By having the jaws l3 -and l4voffset at one side of the levers the tool can be lowered along the side of a wall or surface sothat the jaws can engage with a pin or other object adjacent said surface. This is often important in pulling loose pins or plates used in concrete forms or othersimilar work.
  • the tool is very rugged in construction and can be used to exert great force upon an object which is to be pulled or lifted.
  • the device has been amply demonstrated-in actual practice and found to be very successful and efficient.
  • a grappling tool having in-combination, a pair of levers connected by a pivot adjacent their ends, said levers having flanges projecting therefromrespectively at the same sides thereof and substantially parallel to the axis of said pivot, lugs upstanding. from said flanges respectively, jaws pivoted respectively to said lugs above said flanges aboutaxes extending parallel to the axis of said pivot, said jaws having opposed corrugated faces adapted to swing into parallel relation when an object is grappled, said flanges respectivelyforming stops for said jaws,,linksconnected at one end respectively to the opposite ends of said levers and means pivotally connected to the other ends of said links adapted to receive a support for said tool adapted to be lifted.
  • a grappling tool having in combination, a pair of levers connected by a pivot adjacent their ends and having projections extending laterally at the same sides thereof respectively so as to have portions disposed respectively at said side, a jaw having a portion pivoted to each lever in alignment with said projection and about a pivot extending parallel to said first mentioned pivot, said jaws having gripping surfaces disposed in single planes respectively and extending to the edges of said jaws and extending to one side of said levers so that no part of said tool extends beyond the edges of said jaws at said side thereof, said gripping surfaces being adapted to swing into substantially parallel relation at opposite sides of an object gripped whereby said jaws can be disposed with their sides against a vertical surface and an object close to said surface engaged by said gripping surface without the rest of said tool engaging said surface.
  • a grappling tool having in combination, a pair of levers connected by apivot adjacent their ends, said levers having substantially flat sides. and-each having a flange projecting laterally, at the bottom thereof from said flat sides, said flanges projecting in the same direction, a flange-like lug extending upwardly from said flange on each of said levers, said lugs being disposed in substantially the same plane, a jaw having a lug pivoted between said lug and said flange on each of said levers about a pivot the axis of which is parallel to the axis of said pivot, said jawshaving gripping surfaces thus disposed at one side of said levers, said gripping surfaces being disposed in single planes respectively having sides substantially aligned with one side of said levers so that no part of said tool projects beyond said side whereby said jaws can be disposed with the said sides adjacent a vertical surface and an object close to said surface engaged'by'said jaws without the rest of said tool engaging said surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)

Description

Sept. 29, 1942 A. T. DANIELSON GRAPPLING' OR PULLING TOOL Filed March so, 1940 v E v,
//1. r0 4/ Tam/5L i/arig Patented Sept. 29, 1942 UNlTED STATES PATENT OFFICE GRAPPLING on PULLING TOOL Alton T. Danielson, North St. Paul, Minn. Application March so, 1940, Serial No. 327,041
3 Claims.
This invention relates to a grappling or lifting tool. It is desirable in such a tool to have gripping jaws arranged to exert great pressure on the object grasped, which pressure preferably increases with the pulling effort or force. It is also desirable to have a grappling tool having opposed jaws mounted to swing so that they can come into parallel or substantially parallel relation when an object is grasped. It is also desirable to have a grappling tool that can be moved vertically along the side of a wall or surface to engage an object between the jaws thereof. 7
It is an object of this invention, therefore, to provide a simple and efiicient grappling tool having gripping jaws, said tool being so arranged that the gripping pressure increases with the lifting or pulling force exerted on said tool.
It is a further object of the invention to provide a grappling tool comprising a pair of levers hinged together adjacent their ends, said levers having projections extending laterally at the same side thereof to which are connected swinging jaws, said jaws thus being oifset at one side of said levers.
It is more specifically an object of the invention to provide a pair of levers pivoted adjacent one end having flanges projecting laterally therefrom at said ends, lugs extending vertically from said flanges and jaws pivoted between said lugs and said sides, said jaws having opposed corrugated faces together with links connecting the other ends of said levers, which links are pivotally connected to a member adapted to be connected to a lifting means.
These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawing in which like reference characters refer to similar parts throughout the several views and in which:
Fig. 1 is a perspective view largely in side elevation of the tool;
Fig. 2 is a vertical section taken on line 2-2 of Fig. 1 as indicated by the arrows;
Fig. 3 is a horizontal section taken on line 33 of Fig. 1 as indicated by the arrows; and
Fig. 4 is a perspective view of one of the jaws used.
Referring to the drawing, a lever Ill is shown and while this lever could be variously formed, in l the embodiment of the invention illustrated it is shown as made of a substantially flat bar rectangular in transverse cross section. One end of the lever is increased in thickness and the same has a slot, Illa extending therethrough. Lever I has a flange lllb extending laterally from one flat side thereof at its lower end. A flange-like lug me extends perpendicularly to flange Hlb substantially parallel to th adjacent flat side of said lever and another flange I M extends between lug I00 and the adjacent side of lever I0. Another lever II is provided, also illustrated as formed from a substantially flat bar rectangular in transverse cross section, said lever l-I extending through slot Illa. Levers l0 and H are pivoted together by a countersunk pivot rivet l2. Lever H at its lower end has a flange Hbprojecting from one side thereof in the same direction as does flange lllb. A flange-like lug Hc extends perpendicularly to flange l lb at the outer side of flange Nb and a flange Hd extends perpendicularly to flange Ilb between lug He and the adjacent side of lever I I, said flange being extended upwardly in tapered formation as a rib. As shown flanges l 00 and I la are in substantially the same vertical plane. Levers l0 and II have pivoted thereto respectively jaws l3 and I4. Jaw l3 has a fiat rectangular plate-like portion from one side of which projects a lug l3a disposed between lug' I la and the adjacent side of lever II, the same being pivotally connected to lever II by the pivot rivet l5. Pivot rivet I5 is countersunk at the outer side of lug llc. Jaw l3 has an outer gripping face l3b shownas corrugated and having V-shaped ribs extending substantially horizontally therein. Jaw I4 has a lug Ma disposed between lug 10c and the adjacent side of lever Ill and is connected to said lever by a pivot rivet l5. Pivot rivet I6 is countersunk at the outer side of lug lllc. Jaw l4 also has a rectangular plate-like portion having a gripping surface or face Mb illustrated as being formed with substantially horizontally V-shaped ribs. Levers l0 and II have pivotally connected thereto at their upper ends respectively links I! and i8, said links having their other ends in alinement and disposed between the arms of a yoke memher I 9. Links I! and I8 are pivotally connected to the lower ends of said arms by a pivot rivet 20. A filling washer 2| is disposed on rivet 20 between links I! and I8. The yoke member I9 is of inverted U-shape and its bight portion is disposed in a ring 22 connected to the lower end of a chain 23, which chain will be connected to some suitable pulling means.
In operation, when an object is to be engaged to be lifted the tool will be lowered so that the jaws l3 and [4 are disposed at either side of said object. Upon lifting of chain 23 links I! and I8 will be lifted and this will swing levers Ill and H toward each other until jaws l3 and I4 engage the said object. Said jaws l3 and Hi can swing so that the opposed corrugated surfaces of the jaws will come into substantially parallel relation at either side of a plate, pin or similar ob.- ject to be gripped. Continued lifting or pulling upon member 23 will tend to move jaws I3 and I4 toward each other and increase the gripping efiect. The chain 23 will be lifted until the object gripped is lifted or raised as desired. The lugs I Be and I I form stops at their adjacent edges which are engaged by the rear sides of the jaws l3 and I4.
From the above description it will be seen that pling tool. By having the jaws l3 -and l4voffset at one side of the levers the tool can be lowered along the side of a wall or surface sothat the jaws can engage with a pin or other object adjacent said surface. This is often important in pulling loose pins or plates used in concrete forms or othersimilar work.
The tool is very rugged in construction and can be used to exert great force upon an object which is to be pulled or lifted. The device has been amply demonstrated-in actual practice and found to be very successful and efficient.
It will, of course, be understood that various changes may be made in the form, details, ar'- rangement and proportions of the parts, without. departing from the scope of applicant's invention, which generally'stated, consists in a device capable of carrying out the objects above set forth, in the parts and combinations of parts disclosed and defined in the appended claims.
What is claimed is:
1. A grappling tool having in-combination, a pair of levers connected by a pivot adjacent their ends, said levers having flanges projecting therefromrespectively at the same sides thereof and substantially parallel to the axis of said pivot, lugs upstanding. from said flanges respectively, jaws pivoted respectively to said lugs above said flanges aboutaxes extending parallel to the axis of said pivot, said jaws having opposed corrugated faces adapted to swing into parallel relation when an object is grappled, said flanges respectivelyforming stops for said jaws,,linksconnected at one end respectively to the opposite ends of said levers and means pivotally connected to the other ends of said links adapted to receive a support for said tool adapted to be lifted.
2. A grappling tool having in combination, a pair of levers connected by a pivot adjacent their ends and having projections extending laterally at the same sides thereof respectively so as to have portions disposed respectively at said side, a jaw having a portion pivoted to each lever in alignment with said projection and about a pivot extending parallel to said first mentioned pivot, said jaws having gripping surfaces disposed in single planes respectively and extending to the edges of said jaws and extending to one side of said levers so that no part of said tool extends beyond the edges of said jaws at said side thereof, said gripping surfaces being adapted to swing into substantially parallel relation at opposite sides of an object gripped whereby said jaws can be disposed with their sides against a vertical surface and an object close to said surface engaged by said gripping surface without the rest of said tool engaging said surface.
3. A grappling tool having in combination, a pair of levers connected by apivot adjacent their ends, said levers having substantially flat sides. and-each having a flange projecting laterally, at the bottom thereof from said flat sides, said flanges projecting in the same direction, a flange-like lug extending upwardly from said flange on each of said levers, said lugs being disposed in substantially the same plane, a jaw having a lug pivoted between said lug and said flange on each of said levers about a pivot the axis of which is parallel to the axis of said pivot, said jawshaving gripping surfaces thus disposed at one side of said levers, said gripping surfaces being disposed in single planes respectively having sides substantially aligned with one side of said levers so that no part of said tool projects beyond said side whereby said jaws can be disposed with the said sides adjacent a vertical surface and an object close to said surface engaged'by'said jaws without the rest of said tool engaging said surface.
ALTON T. DANIELSON.
US327041A 1940-03-30 1940-03-30 Grappling or pulling tool Expired - Lifetime US2297291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US327041A US2297291A (en) 1940-03-30 1940-03-30 Grappling or pulling tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US327041A US2297291A (en) 1940-03-30 1940-03-30 Grappling or pulling tool

Publications (1)

Publication Number Publication Date
US2297291A true US2297291A (en) 1942-09-29

Family

ID=23274875

Family Applications (1)

Application Number Title Priority Date Filing Date
US327041A Expired - Lifetime US2297291A (en) 1940-03-30 1940-03-30 Grappling or pulling tool

Country Status (1)

Country Link
US (1) US2297291A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3301585A (en) * 1965-04-02 1967-01-31 Charles F Johnson Sheet and plate handling tool
US3369673A (en) * 1965-01-12 1968-02-20 Clifford F. Mosher Tree harvesting lifting and transporting apparatus
US3655233A (en) * 1969-02-14 1972-04-11 Pilkington Brothers Ltd Tongs for suspending glass sheets
US3677428A (en) * 1970-10-20 1972-07-18 Wallace L E Mallett Bale lifter
US4969789A (en) * 1988-12-16 1990-11-13 Searle Gregory P Machine for handling modular building components
US20040135389A1 (en) * 2003-01-09 2004-07-15 Helms Robert J. Lifting device for manhole tops and manhole covers
US20050230986A1 (en) * 2004-04-16 2005-10-20 Lindberg Paul A Apparatus for manipulating landscaping and other similar materials
US20070014060A1 (en) * 2005-07-18 2007-01-18 Land H B Iii Sensor for detecting arcing faults
DE10207826B4 (en) * 2002-02-25 2008-04-03 Walter Burger tongs
US20110227356A1 (en) * 2008-01-31 2011-09-22 Bac Industries, Inc. Brush remover

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3369673A (en) * 1965-01-12 1968-02-20 Clifford F. Mosher Tree harvesting lifting and transporting apparatus
US3301585A (en) * 1965-04-02 1967-01-31 Charles F Johnson Sheet and plate handling tool
US3655233A (en) * 1969-02-14 1972-04-11 Pilkington Brothers Ltd Tongs for suspending glass sheets
US3677428A (en) * 1970-10-20 1972-07-18 Wallace L E Mallett Bale lifter
US4969789A (en) * 1988-12-16 1990-11-13 Searle Gregory P Machine for handling modular building components
DE10207826B4 (en) * 2002-02-25 2008-04-03 Walter Burger tongs
US20040135389A1 (en) * 2003-01-09 2004-07-15 Helms Robert J. Lifting device for manhole tops and manhole covers
US20050230986A1 (en) * 2004-04-16 2005-10-20 Lindberg Paul A Apparatus for manipulating landscaping and other similar materials
WO2005100228A1 (en) * 2004-04-16 2005-10-27 Lindberg Paul A Apparatus for manipulating and lifting landscaping and other similar materials
US20070014060A1 (en) * 2005-07-18 2007-01-18 Land H B Iii Sensor for detecting arcing faults
US20110227356A1 (en) * 2008-01-31 2011-09-22 Bac Industries, Inc. Brush remover

Similar Documents

Publication Publication Date Title
US2297291A (en) Grappling or pulling tool
US1479711A (en) Portable handle
US1316409A (en) Cotteb-pin-extractihg tool
US2239719A (en) Hammer
US2384396A (en) Ingot tongs
US1720732A (en) Article-handling device
US1364128A (en) Brick-tongs
US3011821A (en) Pipe handling tongs
US1219726A (en) Implement.
US1996967A (en) Battery terminal puller
US2383078A (en) Clamp
US1241378A (en) Stove-lid lifter.
US1642832A (en) Pipe gripping and supporting device
US3897969A (en) Grapple
US961761A (en) Grappling device.
US604758A (en) Carl f
US2997327A (en) Pipe lifting tool
US3901024A (en) Claw type grab hook
US3092414A (en) Pile pulling tongs
US852138A (en) Pipe-lifter.
US1985152A (en) Pipe lifter and aligner
US1649513A (en) Cotter-pin tool
US1398543A (en) Cotter-pin extractor
US1732976A (en) Logging tongs
US992070A (en) Pipe-lifting clutch.