US1152507A

US1152507A - Lifting-jack.

Info

Publication number: US1152507A
Application number: US82274414A
Authority: US
Inventors: William F Hiatt
Original assignee: CHARLES E BENEFIEL Co
Current assignee: CHARLES E BENEFIEL Co
Priority date: 1914-03-05
Filing date: 1914-03-05
Publication date: 1915-09-07
Anticipated expiration: 1932-09-07

Description

W. F. HIATT.

LIFTINGJACK. .APPLICATION FILEI- IIIAII. 5. 1914.

"uM- QI Patented. Sept. 7, 1915.

2 SHEETS-SHEET l.

W. F. HIATT.

LIFTING JACK.

APPLICATION FILED IIIAII. 5, Ism.

Patented Sept. 7, 1915.

2 SHEETS-SHEET 2.

N. .r .I .1 I n .I I n. I. z f... v f I... ...I l s r f r I A l 1 lso construct the implement that an actuating WILLIAM F. HLATT, 0F INDIANAPOLIS, INDIA A, ASSIGNOR, BY MESNE ASSIGNMENTS,

'ro CHARLES E. BENEFI'EL COMPANY, or INDIANAPOLIS, INDIANA, A CORPORATION 0F INDIANA. l

risaaov.

Application led March 5, 1'914. Serial No. 822,744.

HI'ATT, at In.-

dianapolis, in the county of Marion and.

State of Indiana, have invented certain new and useful Improve-ments in Lifting-Jacks, of which the following is a specification.

My invention relates lto lifting jacks and particularly to lifting jacks having toothed standards and slides having pawls engaging the teeth thereon.

One object of my invention is the provision of an implement so constructed that it may be used for a variety of purposes as, for instance, a lifting jack, a pulling jack, a wire stretcher, vise, nail puller, etc.'

A further object is to improve the construction of implements of this character so as to reduce the number of parts, simplify the mode of operation, and reduce the cost of manufacture. i

A further object of the invention is to handle may be readily inserted into or removed from the-pawl carrying slide or shoe and in this connection to so form the handle that it will be supported upon studs cast with the slide, thus doing away with the -necessity of usingfulcrum pins.

A still further object is to so construct the handle and the pawls that the pawls may be readily inserted into the handle and without the necessity of using fulcrum pins.

A further object is to form the slide with a removable bottom wall or base, thus saving space, reducing' the area occupied by the working parts, and providing a support on which the actuating member may rock, this base Lholding the actuating member in place, but upon removal permitting the actuating member to be removed from the slide.

A still further object is to provide means for securing a reverse action of the pawls, said means being also shiftable to move the pawls to a position which will'permit of free movement of the slide longitudinally along the standard without engagement of.

the pawls with the teeth of the slide.

A further object ofthe invention is to provide a lifting jack. with a detachable base, this base being so constructed as to .provide wrench jaws which may be 'used in pulling nails or setting' up nuts and for other purposes.

Specification of Letters Patent.

LIFTING-'J'ACK.

Patented-Sept. '7, i915.

A still further object is to provide the slide of the lifting jack with a foot piece and provide the upper end of the standard with a handle and a projecting jaw, the jaw being opposed to the foot piece so Y two may be used for holding objects between them. 1

Still' another object is to provide upon the that the A A slide a wire gripping device and provide l upon the upper end of the standard a wire gripping device so that the lifting jack may be used for stretching wire.

Other objects will appear in the course of i the following description. l

My invention is illustrated in the accompanying drawings, wherein:

igure l is a perspective view of my irnproved implement. Fig. 2 isa side elevation of the implement, the view being opposite to that shown in Fig. l. Fig 3 is an enlarged detail view, partly in section of the slide and a portion of the standard and the handle. Fig. 4 is a vertical section on the line 1 -4 of Fig. 3. Fig. 5 is a like view to Fig. 3 but showing the reverse mechanism. Fig. 6 is a perspective view of the handle and the pawls. Fig. 7 is a detail view of one of the wire clamps.

` Referring to these drawings 2 designates a base and 3 the toothed standard of the lifting jack. The base 2 is formedA with a transverse rib 4 enlarged at its middle and recessed as at 5 for the' reception of the lower end of the standard. The standard 3 is held in this recess by means of a Cotter pin 6 or any other suitable device of like character passing through the rib and through thestandard. The base 2 is formed at diametrically opposite portions with the 'aws 7 and 8, the faces of the jaws 8 being smooth and the faces of the jaws 7 being notched in the manner of a Stillson wrench. These jaws it will be seen from Fig. l, are converging jaws.

The upper end of the standard is provided with a detachable handle 9, this handle consisting of a casting formed with the opposite vertical flanges l0 and 11 to embrace the upper end of the standard 3 and this handle is 4held to the standard by means of a bolt l2. At the junction of the handle proper with the body of the castin there is formed the flange 13 the under ace of which is toothed as illustrated in Figs. l and 2. The

face of the casting opposite the anges 10 and 11 is provided with a flange 14 the margin of which is inwardly turned and the inner face of this flange is toothed as at 15. Pivotally mounted upon the like face of the casting -is a pivoted spring Aactuated jaw 16 illustrated in detail in Fig. 7. This jaw is pivoted on a stud 17 by means of a screw and washer 17a and the outer or free end of the jaw has an arcuate face 18 which is toothed, this face coacting with the toothed face .of the flange 14. The outer face of the pivoted jaw 16 is formed with the outwardly projecting lug 19 whereby the jaw may be operated. The jaw 16 is formed of a hollow casting as illustrated in Fig. 7, this casting having a transverse web 20. Dis posed within the hollow of the casting is 4 a coil spring 21 one end of which 22, is inserted in a perforation in the casting 9 and the other end of which extends radially outward along the pivoted jaw and passes through a perforation in the web 20. The tendency of the spring 21 is to urge the jaw upward but the jaw may be lpulled downyward by means of the stud 19 acting against the force of the spring. It will therefore be seen that when a wire is inserted between the movable jaw 16 and the fixed jaw formed by the flanged jaw 14 the wire will be automatically gripped by the jaws.

Mounted upon the standard 3 is a sliding housing which will be hereafter called a slide and which is `designated 23. This slide is formed of a single casting except as regards its lower end and on one side is provided With an outwardly projecting foot bracket 24 and on the opposite side is provided with an outwardly projecting jaw 25 adapted to coact with the jaw 13. The outer face of the slide on one side is provided with an inwardly turned iange 26 which is interiorly toothed and which corresponds to the flange 14 on the upper end of the standard. Coacting with this jaw 26 is a pivoted jaw 27 which isformed in precisely the same manner as the jaw 16 but is not spring actuated. This jaw 27 is mounted upon a stud 28 and is held in place upon the stud `by means of a screw 29 and a washer 30.

fitting in these grooves is the slotted base orl bottom member This bottom member is longitudinally vslotted as ai; 36 for the pasdle are pulled apart. j inserted, the trunnions 47 of the pawls be- `ing spread to their original position and the sage of the standard 3. The inner faces of the

side plates

32 and 33 are formedv at opposite points with the inwardly projecting circular studs 37. Pivotally mounted between the studs 37 and the upper face of the bottom plate 35 are the two arms 38 of an actuating member 39, there being a handle 40 which is insertible within this member. As seen in Fig. 6, the actuating member 39 and the two arms 38 are cast in one piece. The arms 38 are both provided with arcuate under edges as at 41 and each arm on its upper face is formed with a notch 42 forming a semicircular bearing engaging'with the. corresponding stud 37. The inner wall of each of the bearings 42 extends beyond the outer wall. Each of these bearings is arranged at an acute angle to'the longitudinal axis of the corresponding arm 38. Each arm 38 is formed with circular apertures 43 having pivotal engagement with the trunnions of oppositely disposed pawls 44 and 45'. The pawls areboth alike. Each pawl comprises laterally spaced members 46, each of these members having a' laterally projecting trunnion47 and the outer ends of the members being connected by means of a transverse'web 48. One of the members 46 is perforated as at 49 while the other inember is formed with the projecting tooth 50. The transverse web 48 o each pawl is adapted to engage with the teeth on the standard 3 as will-be later described. Engaging in the perforations .49 is the coiled contractile of the handle, the trunnions 47 are forced together and the side members of the han- The pawls are thus side members of the handle are drawn together again. This construction does away with the necessity of using a pivot pin upon which the pawls usually operate and not only cheapens the construction but materially lightens the weight and reduces the chance of breakage and detachment of they pawls. If, however, by any chance the pawls become broken, it is a comparatively easy matter to insert new pawls within the head.

The removable bottom piece 35- supports the arms with their bearings 42 in engagement with the studs as illustrated clearly in Fig. 5, this bottom plate also forming a fulcrum upon whichv the under edge of the arms 38 may bear andV rock in the oscillation of the handle. When the bottom piece 35 removed the handle may be readily removed together with the pawls 46. The bottom plate 35 is held in place against accidental removal by means of screws 52.

The standard 3 is formed at its opposite edges with the downwardly and inwardly beveled teeth 53. The teeth 53 on one edge of the standard have staggered relation tol the teeth 53 on the opposite edge of the standard. It will be seen that the apex of each tooth is ilattened asat 54. In order to differentiate the pawls with relation to these teeth, l have designated the pawl on one side of the bar asa and on the other side ofthe bar as 45. lt will be seen that the tooth 48 on one pawl is always out of horizontal alinement with the tooth 48 of the opposite pawl and that upon a rocking motion being given to the member 39, one pawl will be raised while 'the other pawl will be stationary. As a pawl is raised itstooth 48 will slip upward upon the inclined face of a standard tooth until it engages over the upper edge of the tooth while the opposite pawl will be ,relatively fixed or held in engagement with the corresponding'tooth on the standard.

Mounted on the inside of the housing or slide is a reverse device consisting of a transversely eXtending'bar 55 having a semicircular .cutaway portion 56 on its lower edge defining oppositely disposed teeth 57, the outer ends of the teeth being upwardly and .outwardly beveled or rounded as at 58. This o transverse bar has an offset head 59 which passes upward through a rectangular aperture 60 in the slide on one side of the slot through which the standard passes, as illustrated clearly in Fig. 4, and-the upper end of this head is extended in the form'of a spindle 6l. This spindle passes through an outwardly projecting lip Ior flange 62 formed upon the upper end of the slide and disposed between the head 59 and this lip or flange 62 is a coiled compression spring 63 which normally acts to urge the head 59 downward and carry with it the reverse device 55. Pivotally mounted upon the inside face ofthe slide on the same side as the reverse device is a cam 64, clearly illustrated in Fig. 5, which cam is adapted to engage with the lower end of the head 59. ,When this cam is turned in one direction it will act to force the reverse device upwar against the force of the spring 63 as illus- Vtrated in Fig. 5. When, however, the cam is turned in the opposite direction, it will l permit the reverse device to lower so as tu 6l. The cam 64 is pivotally mounted uponv a pin 65, which pin extends through the side wall of the' slide and has attached thereto the wing button 66 whereby the cam may be -actuated. It will be seen that the cam is ofy in the direction of the arrow in Fig. 3, the

tooth 48 of the pawl 45 will 'slide upward upon the inclined face of the standard tooth while the tooth of the pawl 45 will keep its engagement with the tooth with which it is engaged. When the tooth 48 of thepawl 45 has reached the tooth lettered m in Fig 3 the handle is depressed, thus causing the pawl' 45a to move upward until its tooth 48 engages the tooth lettered y. rlhe handle `is again elevated and this oscillation is kept up until the slide has been elevated to its l desired position. n win bo noted that tho bar 55 is so disposed under these circumstances that it does not engage with the pawls at all. rlhis position of the bar 55. therefore, permits the Oscillation of the handleto cause the slide to climb upward upon the standard. In order to reverse the movement of the pawls so ".that the oscillation of the handle willcause the slide to move step by step downward upon the standard, the cam 64 is shifted so as to permit the spring 63 to depress the reverse device or bar 55. Now, when the handle is oscillated Vthe inclined or beveled edges 58 of the bar 55 will alternately engage 'one or the other pawl and as the pawl rises will shift the pawl so as to carry its tooth 48 out of engagement with the tooth of the bar, thus ,allowing the slide to slip downward step by step upon the standard. When the-reverse device is in its depressed position under the intiuence of. the spring 63. as before remarked, its opposite ends will alternately engage one or the other of the pawls and cause the alternate release of the pawls as heretofore stated. In either extreme position of the handle 40 the tooth 48 of the

pawls

45 and 45 occupy ditierent Vrelative levels. The cam 64 having been moved to admit of the reverse device being lowered by the action of the spring 63, the beveled ends 58 of such reverse device engage the beveled endsof the respective pawls. The beveled end 58 of the reverse device 55 on the same side with the pawl in engagement with a -vtooth 53 of the standard extends over the upper beveled end of the tooth 48 of such' pawl, 'while the opposite beveled lend 58 et the reverse device engages the extremity or point o-the pawl von the Asame side `therewith, thereby holding the tooth of such pawl im@ clear of the adjacent toothed edge of the standard 3. Upon moving the handle' the beveled end of the pawl in toothed engagement with the standard rides outward upon the beveled end 58 of the reverse extending thereover, land is moved outward-thereby carrying the tooth of the pawl clear of the adjacent toothed edge of the standard. At the same timethe beveled' end of the opposite pawl rides inward beneath the beveled` end of the reverse touching the point of such pawl. This admits of the tooth 48 of the inwardlym'oving pawl engaging the tooth of the standard below that previously engaged by the pawl. The opposite pawls have a reverse movement, one ascending and the other descending. The ascending pawl is always the one in engagement with the toothed standard, whereas the descending pawl is the one coming into position to engage the tooth of the standard next below that with which it was previouslyin engagement. It will'thus be understood that the descent or backward movement of the slide 27 is similar to the ascent or forward movement of such slide, the movement being positive and step by step. When, however, the

`member 55 is depressed below this point S0 that both of its beveled ends will engage the shifted freely either up or down upon the standard. This further' depression of the member 55 is secured by pressing manually downward' upon the upper en d of the spindle 61. As soon as the pressure is released, however, the spring 51 will act to return the pawls toward each other and this will act to shift the member '55 upward to the second position described.

The operation of my device as a lifting jackwill be understood from what has gone before. It is only necessary to turn the button 66 inone direction to secure an upward movement of the slide upon the oscillation of theA handle 40 or to reverse the button to secure a downward movement of the slide upon the actuation of the handle. Upon a further depressionl of the spindle 61 as befbut for otherjpurposes. Y ""It'may beuse'd/as a fence machine, a wire4 stretcher, a cider or wine press, a post and stump puller and a cable maker as well as in minor uses such as for pulling nails, removing nuts, holding small objects, etc.

When used as a single wire stretcher, the nose or foot rest 24 is placed against the post against which the wire is to bestapled and after all the slack in the wire is pulled up by hand, thewire is caught in the

wire lock

14 and 16 of the carrying handle 9. A few strokes of the lever will tighten the'wire suficiently to cause the machine to cling to the post, the operators hands being free. If one stretch does not give the desired tension, the wire is held between the clamping

jaws

26 and 27 and released from between the clamping

jaws

14 and 16 and the standard is pushed back through the shoe or slide 23, the wire being again caught in the upper pair of

jaws

14 and 16, and the operation is repeated.

Where a fence is being built, necessitating the stretching of woven wire, the chain is used to fasten the top end of the standard to the anchor post. The tool is placed in position with the shoe or foot rest 24 against a clamp holding the end of the wire fencing and the handle operated thus forcing the shoe along the standard and drawingl the wire fencing taut.

Where it is desired to mend a wire fence the slide 23 is lowered to the bottom of the standard. The opposite ends of the broken wire are caught, one in between the

jaws

14 and 16 and the other between the

jaws

26 and 27. The lever is then operated to pull the two ends together. They may be held in this position until spliced.

Whereit is desired to pull a post, a small chain is looped around the post and over the foot rest 2 4. The handle is then operated to lift the slide 23. When used as a press, the base 2 is placed upon a follower. Chains are then passed around the foot rest 24 and beneath the material to be compressed and the handle then operated to raise the slide 23 with relation to the standard 3.

The base of the tool may be used as a hammer, nail puller or for the purpose of making cables. The base is formed upon its margin with the recesses 68. The wires to be woven into a cable are cut in lengths and fastened at one end. The other ends are fastened together just back of the base and the wires are passed through the holes 68. By revolving the base a length of cable may be made. These recesses 68 provide means also whereby screws may be passed through the base to hold the base solidly in case it is so desired.

The use of the base 2 as a wrench for removing nuts, etc., will be obvious and it is also obvious that this base may be used for pulling nails or spikes by inserting the nails or spikes into the slot 8 and then using the i standardv 3 as a lever. The rib 4: also forms a hammer head,

the standard acting as a. handle.

It is also obvious that the handle 9 may be removed from the upper end of the standard and used as a separate tool. The shank of the handle, as illustrated, is formed with 'a plurality of rectangular apertures designated 67 adapted to fit various sized nuts so that the handle may be used for removing or screwing up nuts.

My invention is simple, may be 'cheaply made and is thoroughly eiective in operation. Its particular` advantages reside in the variety of uses to which the implement may be put and also in constructing the slide mounted on the standard, a rocking actuating member bifurcated to engage on either side of the standard, each arm of the bifurcated portion having a bearing recess at its upper edge, the slide having inwardly projecting studs with which said bearing vrecesses-are engaged, a support for the -actuating member to rock upon and holdingthe recessed furcate portions thereof in engagement with the studs, and pawls mounted in the rocking member and engaging with the teeth of the standard. A

2. ln a lifting jack, a toothed standard, a slide mounted on the standard, a rocking actuating member disposed in the slide, the slide being provided with an inwardly projecting stud with which the upper edge of the lactuating member engages, and -a detachablebottom plate mounted in the slide immediately beneath said actuating-member.

3. In la lifting jack, a standard having teeth upon its opposite edges, a slide mounted upon the standard and having opposite inwardly projecting studs, a rocking actuating member bifurcated at its end to embrace the standard, the arms of said bifurcated end being disposed within the slide and each arm being formed in its upper edge with an open bearlng recess engaging a corresponding stud, means `for rockingly supporting the actuating member detachably fitted to the slide and extending along opposite sides of the standard, and 'opposltely disposed pawls pivotall-y mounted between the arms of the rocking member and engaging the teeth of the standard.

4. ln a lifting jack, a standard having teeth upon its opposite edges, the teeth being upwardly and outwardly inclined, a

slide mounted upon said standard, the slide being slotted at its upper end for the pas sage ofthe standard and having two spaced depending side portions dlsposed on' each side of the standard, a detachable plate forming the bottom of the slide andslotted.

to embrace the standard, the side pieces of the slide being formed with inwardly pro- Jecting studs, a rocking member bifurcated to embrace the standard, each arm of the bifurcate'd portion of the actuating member being conveXly rounded upon its lower edge and formed with an open bearingV recess upon its upper edge adapted to engage with the corresponding stud, oppositely disposed pawls pivotally mounted between the arms of the actuating member and engageablewith the teeth of the standard, and a spring urging said pawls toward each other.

5. In a lifting jack, a toothed standard, a slide mounted on the standard, a. rocking actuating member ,mounted in the slide, oppositely disposed pawls mounted in the rocking member and engageable with the teeth of the' standard, a reversing member mounted for vertical movement upon the slide and movable into and out of engagement with the pawls,v and a cam mounted upon the slide and engageable with the reversing member to shift the same.

6. ln a lifting jack, a toothed standard, a slide mounted on the standard, a rocking actuating member mounted in the slide, oppositely disposed pawls mounted in the rocking member and engageable with the teeth of the standard, a reversing member mounted for vertical movement upon the slide and movable into and out of engagement with the pawls, a'spring acting'to force the reversing member downward, and a cam mounted upon the slide and engageable with thereversing member to raise it when the cam is shifted.

7. In a lifting jack, a toothed standard, a slide mounted on the standard, a rocking acn tuating member mounted in the slide, oppo sitely disposed pawls carried by the ac tuating member and engageable with the.

teeth of thestandard, and a member having beveled ends adapted to be vertically shitted in a position to, engage intermittently with the pawls to prevent engagement of a pawl with a tooth of the standard upon a 'rocking movement of the actuating member, shiftable into position to engage both of the pawls to thereby force both pawls out of .engagement with the teeth and shiftable into position entirely out of the path of movement of the pawls, and means for shiftingsaid member.

- 8, In a lifting jack, a toothed standard, a`

slide mounted upon the standard', a rocking actuating member mounted on the slide, oppositely disposed pawls mounted .in the 'rocking member and engageable with the teeth of the standard, each of said pawls having an inwardly extending tooth beveled upon 1ts` upper face, a spring urging said pawls. toward eachother, and a vertically we movable pawl engaging member mounted upon the standard having beveled outer faces, a spring urging said member downward and rotatable means for shifting said,v

' engaging member to lift it upon a rotation of the cam, and a button mounted upon the outer .face of the slide whereby the cam may be actuated.

10. In a lifting jack, a standard having upwardly inclined teeth upon its opposite edges, a slide mounted upon the standard, said slide having oppositely disposed side members embracing the standard and a removable bottom plate removably engaging said side members and embracing the standard, the said members being formed with oppositely-disposed studs, an actuating meinber bifurcated at its ends to provide parallel arms, said arms projecting into Ithe slide and being formed upon their upper edges each with an open recess for engagement with the corresponding stud, and oppositely disposed pawls having trunnions engaging the arms of said actuating member on each side of and below the rocking axis of the actuating member.

11. In a lifting jack, a toothed standard, a slide mounted upon the standard, a rocking actuating member disposed in the slide,

the slide being provided with inwardly pro-l j ecting studs with which the actuating member engages, pawls on the actuating member engaging the teeth of the standard, and detachable means for holding the actuating -member in rocking engagement with said studs. ,i p l A12. In a lifting jack, a standard formed with oppositely disposed, upwardly inclined teeth, a slide embracing the standard, a rocking actuating member bifurcated at one end to provide arms embracing the standard and insertible within the slid-e, lsaid slide being formed upon its inner faces with inwardly projecting studs with which the arms of the actuating member have rocking engagement, and a member detachably engaged with the slide and when in position engaging with the lower edges of the arms of the actuating member to hold the upper edges of the arms in rocking engagement with the studs.

13. In a lifting jack, a standard having teeth upon its opposite edges, a slide mounted upon the standard, the slide being -slotted at its upperend for the passage of the standard and having two spaced depending side portions disposed on each side of the standard, the inside faces of these side portions at their lower ends being grooved, a plate forming the bottom of the slide and adapted to` be inserted in said groove, said plate being slotted to embrace the standard, the side pieces of the slide being formed with inwardly projecting studs, anactuating member bifurcated to embrace the standard and to provide parallel arms, the upper edges of the arms being engageable with said studs and the lower edges of the arms being supported upon said detachable plate, and oppositely disposed pawls pivotally mounted between the arms of the actuating member and engageable with the teeth of the standard.

14. In a lifting jack, a toothed standard, a slide mountedupon the standard and having inwardly projecting studs, an actuating member disposed within the slide and notched for detachably engaging said studs for a rocking movement, and detachable means for holding said actuating member in place.

In testimony whereof I aix my signature in presence of two witnesses.

WILLIAM F. HIATT. [11. s]

Witnesses:

SAML. W. TEMPLn'roN, EDWARD C. ILY.