US1339581A - Pulling and lifting device - Google Patents

Description

S. SANTINO.

PULLING AND LIFTING DEVICE.

l v 4APPLICATION FILED 0CT.14, 1918. 1,339,581. Patented May 11,1920.

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S. SANTNO.

PULLING AND LIFTING DEVICE.

APPLICATloN FILED oT. 14, 1918.

1,339,581. Patented May 11,1920.

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`APPLICATION FILED OCT. I4, I9I8.

I Patented May 11, 1920.

S.SANTINO.

PUL-LING AND LIFTING DEVICE.

WPHC/'111011 FILED ocT.14.191a.

Patented May 11, 1920.

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UNITED sTATEs PATENT oEEicE.

SALVATORE SANTINO, OF CHICAGO, ILLINOIS, ASSIGNOR T0 LOUIS C. BERMAN, 0F CHICAGO, ILLINOIS.

PULLING AND LIFTING DEVICE.

Specification of Letters Patent.

Patented May 11, 1920.

Application filed October 14, 1918. Serial No. 257,940.

To all whom t may concern:

Be it known that I, SALVATORE SANTINO, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pulling and Lifting Jacks, of which the following is a specification.

This invention relates to a jack which may be used either as a wire puller or 'for lifting and raising in the ordinary jack operation. The principal object of the invention is to provide a new and improved construction, combination and arrangement of parts by which it is possible to effect a lowering action step by step as well as the raising operation in the same manner.

Another object of the invention is to effeet the step by step operation automatically and to cause the mechanism to be released during the lowering action whenever desired.

Other objects will appear hereinafter.

In the accompanying drawings,

Figure 1 is a side elevation of a jack constructed in accordance with the principles of this invention;

Fig. 2 is an end elevation of the same;

Fig. 3 is a view of the operating mechanism with the lid or housing cap removed;

Fig. 4 is an inside view of the housing cap removed;

Fig. 5 is a detail sectional view taken on the line 5 5 of Fig. 3;

F ig. 6 is a sectional view of the operating mechanism Fig. 7 is a plan view of the lowering mechanism on the inside of the housing;

Fig. 8 is a sectional view taken on the line 8 8 of Fig. 6;

Fig. 9 is a side elevation of a lifting jack;

Fig. 10 is an end elevation of the lifting jack; n

Fig. 11 is a view of the lifting jack with the cover of its housing or casing removed;

Fig. 12 is a plan vview of the lowering mechanism on the inside of the housing cover; and

Fig. 13 is ya detail view of the gripping devices. l

In jacks of this kind it has been customary to provide a construction which will effect a raising action, or an action in one direction, by a step by step movement. In the other direction of movement it is necessary to trip the operating mechanism by manual means so that no step by step return is possible. The present invention provides for a step by step movement in either direction, and in addition includes means for releasing the, step by step mechanism in one direction so that the jack can be returned to the starting point.

In the form of my invention shown by Figs. 1 to 8, a tubular standard 1 is provided with a foot piece 2 which may be secured to one end thereof by means of a set screw 3. At the other end a jaw member 4 is attached by means of a bolt 5 which extends through it and the end of the tubular member 1 and forms a pivot for a wire clamping lever 6 which cooperates with a wire clamping jaw member 7, and also eX- tends through a slot 8 of a link 9 normally within the end of the tubular member but removable therefrom as indicated by the broken outlines in Fig. 1.

A housing or casing 10 is provided with opposite perforations adapting it to slide freely upon the tubular member 1 and providedwith a cap or'housing cover 11 removable froni one side of the casing. The casing is formed with a jaw portion 12 which coperates with the jaw member 4 and may also be provided with a wire clamping jaw 13 and a pivoted clamp 14 to cooperate therewith corresponding to the aw and pivoted clamp in connection with the liaw member 4. The lower edge 15 of the housing also preferably corresponds in shape.. to the upper edge of the foot member 2 so that the casing 10 can be moved closely adjacent the foot member.

, At one side of the casing 10 is a recess 16 through which a .lever 17 extends between the casing and its cover 11, the outer end of the lever being provided with a removable handle 18 and the inner end of the lever being pivoted by means of a circular projection 19 in a hole 20 inside of the casing where it is held in place by means of a bolt 21. This'lever is also provided with another projection 22 at a short distance from its pivot point which is inserted in a corresponding perfoi-ation 23 of a link 24. The other end of this link 24 is pivotally connected to a member 25 which is slidable upon the tubular member 1 inside of the casing. Between the inside of the casing 10 and the member 25 at the side opposite the link 24, is a spring 26 which tends to press the member 25 upwardly. Within the member at this side of the tubular member' 1 is a recess 27 in which a ratchet carrier 28 is pivoted by means of a circular portion 29 which is seated in a corresponding portion of the recess. This ratchet carrier has a recess 30 in which a segmental ratchet member 31 is seated and the carrier is pressed in the direction ol the tubular member 1 by means of a spring which is interposed between it and the side of the recess 27. Above the recess 27 of the member 25, the casing 10 is provided with a corresponding recess 33 for seating a pivoted carrier 34 in which there is a ratchet member 35, the carrier having a spring 36 for pressing it in the direction of the tubular member 1. These ratchet members 31 and 35 are preferably formed with a cut-away shoulder 37 which coperates with a projection 38 for normally holding the members in their respective recesses.

Extending from the carriers 28 and 34 on one side thereof are projections 39 and 40, shown more clearly in Fig. 8, and these projections are held in engagement with pivoted arms 41 and 42, as shown in Fig. 7, by means of the springs 32 and 36 which tend to press the carriers in the direction of the tubular member 1. Within the casing 10, adjacent the pivoted arms 41 and 42, is a slide 43 which is guided at its ends by means of slots 44 and guide pins 45, with washers 46 holding the slide in place. The

slide is provided with an inclined surface 47 for engaging the arm 41 and with an inclined portion 48 to engage the other arm 42 to press them outwardly in alternation, depending upon whether the slide is in its lower or upper position, thus pressing the carriers 28 and 34 for the ratchet devices outwardly from the member 1 in accordance therewith. Pivoted on the inside of the casing 10 is a bell crank 49 having an extremity 50 to engage the slide 43 and move it in accordance with the engagement of the bell crank. The other end of the bell crank is provided, with a slot 51 and lateral projections 4 i and 49d any one of which is adapted to be engaged by a projection 52 which consists of a sleeve with a flange 53 at one end which is inserted through the projection 22 of the operating.

lever 17 by which the latter is connected to the link 24. Between the iiange 53 and the end of this projection a spring 54 is in-.

serted, as shown more clearly in Fig. 5, and slidable within the sleeve from the flanged end is a plunger 55 having an enlarged head 56 with a heavier spring 57 interposed between the head 56 and the flange 53. These springs 54 and 57 tend to pressythe plunger outwardly and to prevent the engagement of' the sleeve 52 in the slot 51 of the bell crank 49 but at this time it can engage projections 49 or 49l. rllhe cover 11 of the casing 10 is provided with a flat cam member 58, as shown more clearly .in Figs. 4 and 5, which normally bears against the head 56 of the plunger 55 and is provided on the outside of the cover with an arm or handle 59 for rotating the cam 58 to press the plunger inwardly against the tension of the springs 54 and 57. In case the bell crank 49 does not happen to be in position where its slot 51 registers with the plunger 55 and its sleeve 52, the operation of the cam 58 simply compresses the springs so that when the lever 17 is moved to bring these parts to register, these springs will force the sleeve 52 inwardly into engagement with the slot 51 of the lbell ycrank.

Pivoted within the casing 10, as shown more clearly in Fig. 7, is an arm 60 which is controlled by means of another arm or handle 61 on the outside of the casing. The arm GO has two positions in one of which it engages the arm 41 for holding the ratchet carrier 28 of the slidable member 25 out oi position where its ratchet engages the slidable member 1. In its other position, it does not engage the arm 41, and has no eifect upon it. In its operating position, this arm GO causes a sudden lowering or' vthe housing whenever the movement of the operating lever 17 disengages the upper clutching member 35 from the tubular standard 1.

In operation, to raise the casing 10 with respect to the `foot member 2, the lever 17 is rocked up and down about its lpoint of support, causing the corresponding movement of the link 24 and the member 25 slidable within the casing and with the -vtoothed or ratchet members 31 and 35 acting alternately as the opposite member is raised due to the action of the lever 17. That is, when the member 25 is raised by the action of the lever 17, the clutching member 35 vholds the` casing 10 stationary and when the lever is reversed, the clutching member 31 holds the member 25 stationary, raising the casing 10 about the projection 22 of the lever 1,7 as a pivot. If it shouldhappen vthat the side 43 is inengagement with either arm 41 or 42, the rocking of the lever 17 will cause the sleeve 52 to engage either projection 49u or 49d to rock the bell crank 49 and engage and move the slide 43 so that its inclined surfaces 47 and 48 will be positioned between the projections on the arms 4l and 42, thereby not interfering with the normal raising action of the clutching members 31 and 35.

Vhen it is desired to lower the casing member 10 step by step, the action of the clutching members 31 and 35 must' be reversed and this is effected by means of the slide 43 which is connected to operate with the lever 17 by means of the plunger 55 and the sleeve 52 which are pressed inwardly by means of the cam 58. The yengagement of the sleeve 52 with the slot 51 of bell crank 49 causes the bell crank to be operated so that the end 5() thereof moves oppositely to the movement of the operating lever 17. When the lever 17 moves upwardly under these circumstances, the end 5() of the bell crank moves downwardly engaging the arm 51 and pressing the projection 39 of the carrier 28 outwardly so that instead of the member 25 being held by the clutching member 31 upon the downward movement of the operating lever 17, the' member 25 is itself moveddownwardly; and when the operating lever is at the lower end of its stroke, the arm of the'bell crank is moved upwardly, pressing the slide 43 in engagement with the upper arm 42 which presses the clutch holding member 34 outwardly so that instead of the casing member being raised by the downward movement of the operating lever, it is in fact disengaged from the standard land is lowered by the subsequent upward movement of the lever 17. iVith the operating lever in engagement with the bell crank, if the arm is moved into engagement with the clutch holder arm 41, it is obvious that the movement of the lever which engages the other clutch hold ing member 34 to throw it out of engagement with the tubular member 1, will entirely disconnect both of the clutching members from this tubular standard or member 1, so that the entire casing 10 and the slidable member 25 will drop. A y

In the construction shown by Figs. 9 to 13, a tubular member 62 is slidable in a base 63 which is attached to or formed integral with the casing 64 which is in effect a reversal of the structure shown by the other figures, therebyadapting this construction for use as a lifting'jack for automobiles and the like. An operating member 65 is pivoted within the casing to a member 66 slidable upon the tubular member 62. The op- 45 erating lever is connected by means of a linl 67 with the base member 63 so that its oscillation causes a movement of the slidable member 66 relatively to the base member 63 and casing 64. A clutch member 68 is pivotally mounted in a carrier 69 in the casing 64 and another clutch member 70 is pivotally mounted in the slidable member 66 by means or' a carrier 71. Both of these carriers are pressed in the direction of the tubular member 62 by means of springs 72 and they have projections 73 and 74 for reversing their movements to effect the lowering action. The casing 64 is provided with a cap or cover plate 5 which fits over that side of the casing toward which the projections 73 and 74 of the clutch holders 69 and 71 extend. On the inside of the cover plate, arms 76 and 77 are pivoted and extend substantially parallel a spaced distance apart but being adapted to engage the projections 73 and 74 respectively. A slide 78 is mounted to move between the arms 76 and 77 and has cam surfaces 79 and 80 to engage the projections 81 and 82 of the arms 76 and 77 respectively. As in the construction `previously explained, this slide 78 is unnecessary except when it is desired to produce a step by step lowering action of the jack, and in the case of the present construction, this is effected by means of a lever 83 which is attached to the lower end of the slide and has an outer end 84 which extends through a slot in the cover plate formed with a vertical portion 85 and a horizontal portion 86. lThe other end 87 o1 the lever may be moved by rotating the outer end 84 thereof to register with the vertical portion of the slot, and in this position the inner end 87 is adapted to engage the projections 88 or 89 on the op-` erating lever 65. One of these projections 89 is formed with an extension 90 which prevents they rotation oi the lever83 when it is adjacent the stop 89, thereby prevent# ing the rotation of the lever 83 except when the operating lever 65 is in its raised posi" tion. In the operation of this jack construction, itwill be obvious that the movement of the operating lever 65 will cause the reciprocation of the slidable member 66 within the casing 64 which will raise the tubular member 62 by the alternate engagement of the clutching members 69 and 71. In order to move the member 62 downwardly, or to lower the jack, the lever 83 is rotated from its horizontal position, as shown in Fig. 9, so that the outer end 84 will register with the vertical portion 85 of the slot and at this time the inner end 87 will be in a position to engage either of the projections 88 or 89 of the operating lever. The movement of the operating lever will then cause the engagement of the slide 78 with. the arms 76 and 77 to move the projections 73 and 74 outwardly in alternation depending upon the movement of the slide, and in such a direction as to cause the lowering of the jack standard 62, as before explained.

In this construction no means is shown for lowering the jack all at once, but the member 62 is provided with recesses 91 and 92 on opposite sides thereof so that when the clutching members 68 and 70 are opposite to the recesses, the movement of the operating lever will produce no clutching engagement and therefore there will be no further upward movement of the member 62. This is for the purpose of preventing the member 62 from being moved entirely out of connection with the other parts.

In both of these jacks, it will be observed that in the ordinary operation in one direction, there is no necessity for the action oit the reversing slide, but that in the other direction of movement the reversing slide is operated by ei'ig'ageinent and in accordance With the movement of the operating lever so that the clutching devices Will be operated oppositely or in a direction the reverse of ytheir operation in the other direction yof operation of the jack. In addition, the jack first described has means for dropping the lifting part the full length of the standard instead of by the slower step by step operation. The advantage of this is apparent. The different actions in the iirst jack are produced simply by setting a handle or lever on each side of the. casing in either one of two positions.

I claim:

l. In a jack, a slidable member, means including a lever for moving the member step by step in one direction, and additional means including a slide having connection for movement With the operating lever vfor moving the member step by step in the other direction.

2. In a jack, a standard, a member slidable relatively thereto, means for moving the member step by step in oney direction including a lever and clutching devices alternately effective, means for moving the member step by step in the other direction, said means including a slide movable in accordance With each movement of the operating lever to engage the clutching devices, and means for connecting the slide With the operating lever.

3. In a jack, a standard, a member slidable relatively thereto, means for moving the member step by step in one direction including a lever and clutching means, additional means for moving the member step by step in the other direction oscillatable with and depending for operation upon the operating lever, and a device for releasing the step by step means when the lever is operated for moving the member step by step in the said other direction so that the said membercan be moved freely with respect to the standard.

4. In a jack, a standard, a member slidable with respect thereto, means for moving the member step by step in one direction including a lever and alternately operating clutching devices, additional means for moving the member step by step in the other direction including a slide and means for connecting it for movement with the lever, and a device for rendering the step by step mechanism of no effect in the said other direction so that the member can be moved freely with respect to the standard.

5. In a jack including an operating lever, a support and members slidable relatively to the support and movable with respect to each other, a clutching device in connection With each member for engaging the support, step by step mechanism comprising a slide and means for alternately engaging the clutching devices, and a device for positively connecting the slide for movement with the operating lever.

6. In a jack, the combination With a standard, of members slidable With :respect thereto and movable With respect -to each other, a clutching device for the standard in connection With each member, a slide adapted to engage each of the clutching devices upon alternate movements thereof, and means including a lever having projections i'orengaging and moving the slide in opposite directions of movements thereof.

7. In a jack, a standard, members movable relatively to the standard and to each other, a clutching device in connection With each member, vmeans including a slide for moving the clutching devices in alternation out of engagement With the standard, a lever having spaced projections, and means for causing the slide to be engaged by the projections at the limits of movement in opposite directions of the lever.

S. In a jack, a standard, a pair of members slidable thereon and movable With respect to each other, a clutching device for the standard in connection With each of the members, a lever connected to said members, a movable slide to positively engage each of the clutching devices in alternation to move them out of engagement with the standard, and means for connecting the slide for movement With the operating lever, said means comprising a rotatable member operable at Will.

9. In a jack, a standard, a pair of `movable members slidable thereon, a clutching device in connection with each member, a lever in connection with the members, a slide 'ior positively engaging the clutching devices in alternation depending upon the direction of movement of the slide, means for connecting the slide for operation With the lever, said means including a slotted bell crank, and spring pressed means in connection with the lever for engagement/With the slot of the bell crank when the lever is moved to make the means register With the slot of the bell crank.

10. In a jack of the class described, a pair of. clutching devices and means for operating them in alternation including a movable slide, a lever, means for connecting the lever to the slide including a slotted bell crank, a sectional spring pressed pin carried by the lever, and means for engaging the pin to press it in the direction of the bellcrank so that it Will engage with the slot thereof when the lever is moved to make the pin register with the slot.

11. In a jack, a standard, a pair of relatively movable `members slidable thereon, a clutching device in connection with each member, a single movable slide for positively engaging each ofthe devicesv in alternation depending upon the direction of movement of the slide to throw them out of engagement with the standard, and an independently movable arm for disengaging only one of the clutching devices from the standard so that the members can be slid freely along the standard in one direction of movement.

12. In a jack, a standard, a pair of relatively movable members slidable thereon, a clutching device in connection with each member, means including a lever for operating the clutching devices in alternation to effeet a raising action of the members with respect to the standard, means for reversing the action of the clutching devices to cause a step by step lowering action of the members, said means including a reciprocable slide for positively engaging each of the devices depending upon the direction of movement of the slide, means for connecting the slide Jfor movement with the operating lever and a separate device movable to engage one only of the clutching devices so that when the operating lever is moved to release the other one the slidable members will move freely along the standard in the lowering direction.

13. In a jack, a standard, two members slidably mounted with respect to each other on said standard, one member being disposed within the other, a lever and a connecting link connecting said members together, a clutch device in each member resiliently held against the standard, a slide mounted on one of said members and operatively associated with the clutch devices, and means operatively associated with said lever for engaging the slidable member for moving the clutch devices out of engagement with the standard.

14. In a jack, a standard, a casing slidably mounted on the standard, a member disposed within said casing and slidably mounted on the standard, a clutch device in the casing engaging the standard, a clutch device-in said member engaging said standard, a lever and a connecting link connecting the member with said casingand means operatively associated with the lever and clutch devices for moving the clutch devices out of contact with the standard upon movement of the lever.

15. In a jack, a standard, a casing slidably mounted on the standard, a member disposed in the casing and slidably mounted on the standard, a connecting link and a lever connecting said member with said casing, a spring-pressed clutch device mounted in said casing and engaging the standard, a spring-pressed clutch device in said member engaging said standard, members pivoted on said casing and engaging portions of said clutch devices, a slidable member mounted in said casing and having cams thereon adapted to engage said pivoted members for moving the clutch devices out of engagement with the standard, and means operatively associated with said slide and lever for moving the slide upon oscillation of the lever.

In testimony whereof I have signed my name to this specification on this 5th day of October, A. D. 1918.

SALVATORE SANTINO.

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