US1181395A - Lifting-jack. - Google Patents

Description

LANE.

LIFTING JACK.

APPLICATION FILED JAN. 15 zen-1 Patented May 2, 1916 s. LANE. LIFTING J'ACK1 APPLICATION FILED JAN-1,5. I916- Patented May 2, 1916.

3 SHEETS-SHEET 2.

G. LANE.

LIFTING JACK.

APPLICATION FILED JAN- l'5, 191s.

Patented May 2, 1916 SHEET 3- 3 SHEETS :1. v ggg the men

tha

Odi d 111 and thus control the dogs to effect-the lowonly necessary to move the contact piece or arm 21 into such position that, during the rocking movements of the lever 6, it will be inefiective with relation to the arms or portions ll and 12 of the bell cranks 11 and 12. A convenient means of effectingthis removal of the contact member is to connect the handle to the lever 6 in such a manner that while said hand lever is connected to the lever 6 with suiiicient permanence or rigidity to enable the jack to be placed into position beneath the car axle, yet the hand lever is capable of a limited movement in the socket 6 so as to shift the contact piece into such a position that it will not contact with said portions or shoulders 11 and 12 In the embodiment shown in Figs. 1 to 7, I have arranged the hand lever in such a position that it is capable of a lengthwise movement in the socket and provide it with a projection 18 designed to contact with a portion of the contact piece 'or bar 21 at one side of the bell crank levers,

so that when the hand lever is pushed into its extreme inward position, said projection 18" will force contact piece 21 forward into the position shown in dotted lines in Fig. 1, where it will be inoperative with respect to the bell crank levers. A limited outward movement imparted by a pull upon the hand lever will draw said projection away from the contact piece 21, allowing the spring 22 to throw the latter back into operative position with the said portions l1 and 12 of the bell crank levers. To enable this movement of the hand lever to take place by mere push or pull thereon without" affecting the connection which enables the hand lever to serve as the means for positioning the jack, I provide the inner end of the hand lever with two notches 18 and 18 respectively and I form the dog 19 with one abrupt face 19 and one inclined face 19'. The recesses 18 and 18 are so arranged that when recess 18* is engaged by the dog, the projection 18 of the hand lever is in such position as to render the contact piece 21 operative to effect the lowering of the jack, while when the recess 18 is engaged by the dog the projection 18 has swung the contact piece into ineffective position so that the pawls or dogs 4 and 5 will be effective to raise the lifting bar. The recess 18" is. provided with an abrupt face to correspond to the abrupt face 19 of the dog, so that the hand lever cannot be pulled completely outof the socket without withdrawing the dog by the thumb piece on the spring. The opposite wall Z) of the recess is inclined to correspond to the face 19 of the dog, the inclination being such that any 'push upon the hand lever will cause the dog to be pressed outward by the cam action against the tension of the spring until it alines with recess 18 and is projected thereinto,' in this position 'said dog retaining the hand lever in lowering position. Said recess.18 has one face Z) corresponding in inclination to the face 19 of the dog while the other face is inclined to such an extent that with the dog engaging the recess 18, an outward pull upon the handle will cause said inclined face to act as a cam to force the dog outward untilit has alined with and sprung into the recess 18". In either position the dog engages the corresponding recess with suflicient holding force to enable the hand lever to be'used as the means for manipulating the jack.

In order for the operator to place the jack beneath the axle of an automobile and operateit without getting under any part of the body of the machine, it will be obvious that a hand lever of considerable length is necessary. Such a hand lever would be too long to be conveniently carried in any of the tool receptacles with which automobiles are provided and to this end I provide a folding handle comprising a plurality of parts with means for rigidly connecting said parts when the i-handle is unfolded or extended. Sucha hand lever is shown in detail in Figs. 6= ii; comprising two. members or bars 7 ahd i pivotally connected by a pivot pin or bolt 7, one of the members having a flange or lug '2' adapted to bear against the under edge or face of the adjoining bar to render the two parts rigid as regards downward movement, which is the only time any strain is applied, to the hand lever. At the same time nism by a longitudinal movement of the entire hand lever, as herciubeforc described, I may desire to provide a separate part or rod carried by the hand lever and adapted upon insertion of the end of the hand lever in the socket to be brought into operative position for the shifting of the dog or abutment which coacts with the bell crank levers, so that the reversal of the jack may be effected by the reciprocation of this rod instead of the entire hand lever. Such an embodiment of my invention is shown in Figs-S to 11. In this construction the inner end of the hand lever would be locked rigidly within the socket by having the dog W 0 1b engaged with a single recess a; in the handle bar or lever and the controlling bar or member 21 would be shifted against the tension of its spring by a longitru'liually movable rod 24 suitably guided by the handle bar as by means of eyes 25. In this form I 1mm shown the Contact member 521 as raked nmvrr'meni; E0 l4; 3d t0 be nmmally pressed town the .61 0 by a 1g and. in this; imam-i0 porno! crank levers 11 ntu .6191 21 beluga; adzmt v Dunn 7 up; retained .11161931 60g fiwng in n c1rcumfercntiul g1 extendiz'lg part Way fll'mm V pcrtiun of the hnn'ib 1 The inner 43nd of the handle bar Wm] be p1*= vidcd with a cam portion, which in 011$ q'msition. 0:? ti handle bar would allow he contact pic 1 ano'tiwr position the am gunmen of iiha Ladle 11m: Wonk force said Contact piece 111 the epposii-le direction. In the an! 13di-- mcnt ShG-Wll in Figs 153 to 4, the cum par-- tion is armed 1y providing tlw inner and 01'? the ham 1Q. with a, V Shapefi bar 110117. When 'Llns cyimdrlcni J'XHYMOll said )8 1n the 05131011 shown 111 Egg. 71; the m and h tact men bez- "21 would c st at the bottom my the v shaped (kpmsslon, While when "Face fer co 1 v w I.

1 turn to the position inmi "M .zzc'i; piece 21 W11! b 1 0f the cam. chum i con'lprisi mg 31101 H T monthly guuiieu finer moving fine 13 a Rlui eluding 1 0p comlecind :1, lizniced ho to and movers mating; n smd op-emt- L lly movumen and a separate said :ictunlxniq ll tool; member 1.

8. A eel; com a lifting lie-11', an {GU15} pawl and a holding now. said lilting bur,

prising a. standard iringg pressed nee/Zing" said bell o con'uct piece bunting lever and 1m adapted to cont l, and :i 'onnclle Inn for snirl :ic'bonting level carrying a part which is niovob spool to the actuating lever for ficcl the position of said COn RL/t def 9. A aol; comprising a, lifting bar on actuating lever hosting socket, a lifting pawl and :i. llOlfll "1 said lifting ban, :1

nil-(l. or gnzcse,

ovi to mom nting lever mid i own mloptecl to cam-2:10;;

Hill 'zon (1:10;

spring, sub- 3; member wiclecl thereby on actual:- 1: lifting owl; 1d 1'1 lcllng owl soul lm in" I V y; we: pools into 0')- im solution 1o zlio lifting bar a rate 5 iii conncolecl to each gai'vl mo:

actuating; lever? for alternatively apion to s .ld so 'mmte springs, a cling to keep said means pi'essocl 2101i? :11 3, 11). one fllll'ficlllfll. and handle bar nuwzwly connocted with the ao'tw ng le- W31 and 11m 21 part adopted by movement handle bar While so connected $10 slnit said means against the tension of its .mr oiled thereby, an actuating lover 11!: Ring :1 socket, a lifting pawl and a holding pawl ooiipornjing' with said lifting ban a spring; for noi'nmlly pressing pz'iwls into opci'allno' relation to Th liftinq, bar, a pair of bell crank levers pivoted 1L ho suirl notuotim lover, sn'in s eonnectin \J 1 l t: b

lifliw jock comprising a stn. (lard,

said bell crank lovers with said pawis, a

cmiinct piece carried by the animating lover and longitudinally movable of the actual;- ing lo and adapted Whenin one position to co'itac'b olizormtelj/ with said. bell. crank l4 under tho rocking movement of the lover and in onotlior position to avoid such contact, soicl Contact piece lliV a pail; extending into the socket of the ing lever, a spring for forcing said conlinci piece in one direction and a, handle our minpted to be inserted in said socket and luring a part adapted lo actuate sand eonizwt device against the tension of its spring.

in testimony whereof, i affix my signamre n presence of two witnesses.

GEORGE LANE.

1 S. Linn, Jr Bloom} UIIARI

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