US1276574A

US1276574A - Self-lowering journal-jack.

Info

Publication number: US1276574A
Application number: US19569917A
Authority: US
Inventors: Meyer Rosen
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-10-10
Filing date: 1917-10-10
Publication date: 1918-08-20
Anticipated expiration: 1935-08-20

Description

M, ROSEN.

SELF LOWERINGJOURNALJAC'K.

APPLmATmN FILED oc,1o,1917.

'. ,2?@5 5?@ n lPatented Aug. 20, 19H5,

A o@ j 2 SHEETS-SHEET l. War/f.. I3

M. ROSEN,

SELF LUWEHING JOURNAL mex.

APPLICATEON FILED OCT.

" SHEETSvSHEEY 2.

liti

MEYER ROSEN; F BLUOMINGTN, ILLNOIS.

SELF-LOINERNG JOURNAL-JACK.

Speccatioii ofetters Patent.

lateiitetl Aug. 2e. f ills.

Japplication filed october 1G, 1917. Serial No. 195,689.

To all whom t may concern.'

Be it known that l, MEYER ROSEN, a citizen of the UnitedStates, and a resident of Bloomington, in the county of McLean and frita-te of Illinois. have invented an improvement Ain Self Lowering Journal- Jacks, of which the following description, in connection with the accompanying drawings, is a spcciiication, like characters on the drawings representing like parts.

yllhis invention relates to self -lowering journal jacks. A ln order that the principle of the -invention may be readily understood, l have disclosed a single embodiment thereof in the accompanying drawings, wherein- Figure l is a transverse section taken through the iaclr;

Fig. 2 is a vertical transverse section upon the line2-2 of Fig. l;

3 is a vertical transverse section upon the line 3-3 of Fig. 2;

Fig. 4 is a detail iii section upon the lino i-- of Fig. l; and

Fig. 5 is a detail upon the line 5*-5 of Fig. 1.

The jack one embodiment. whereof is shown in the accompanying drawings, is adapted for any use to which Jacks are or l may be applied, but particularly to lifting heavy loads, such for example as the driving wheels of engines. used in connection with automobiles and for numerous other purposes not necessary to enumerate.

Referring more particularly to the drawings, l have therein represented the casing of the jack as composed of inner and outer members 1, 2, the inner member l being preferably composed of a single cast part having ahollow base portion 8. Said ineinberY l in transverse section is rectangular, as clearly shown in Fig. 1,' thus forming four vertical walls, 4, 5, G, 7, all of which are continuous, with the exception of the wall 7 which, as shown at the left in Fig. i, is formed with a verticalv slot or opening to accommodate the thickened portion 8 of the adjacent Wall of the member 2, said thickened portion 8 having integrally formed' therewith teeth 9 in vertical alineinent and constituting a rack. l provide suitable gearing, one member of which meshes with said rack, thereby to ciect the lifting of the lt may, however, be

member 2 of the casing'. For this purpose l provide a shaft 10 having a squared outer end l1 to which a crank or other driving member may be applied. The shaft l) which has a reduced inner end is mounted for rotation iii a bearing l2 integral with which, most clearly illustrated in Fig. ly

is a yoke 13 having opposite lugs 14, l5 f respectively mounted inv an inwardly er;u tending web 16 of the wall il, and the wall 6 of the inner member l of the casing. The shaft l0 extends through elongated slots l?, 18 of the casing members l, 2, thus permit ting rocking movement of the shaft l0 in a vertical plane about the lugs ll, l5 of the yoke as pivots.

l provide *thev shaft l0 with a driving member thatvis adapted to bethrown into or outfof gear with the parts to be driven by the swinging movement of the said shaft 10. For thispurpose and in order to secure a relatively' great leverage,l have secured upon the inner end of the shaft l0 a dish;

like member 19 having' upon the inner face thereof aspiral cani 20 most clearly shown in Fig. t. Theadjacent ends 2l, 22 of the spiral are spaced apart the distance of one tooth of the gear 23 fast upon the transverse shaft 2li, whereby when the shaft 'l0 is in the position shown inlligs. l and 2, the rotation of said shaft eiiects the turning movement of the gear and consequently of the shaft 24. The gear 23 is provided with teeth 24 which are shaped somewhat like those of a worin Wlieelg that is, they are substantially are shaped.

Fast upon the shaft 24.- which carries the ,gear 23 is a gear 25'meshing with a similar gear 26 upon the horizontal shaft 2?, which has fast thereon a gear 28 meshing with the teeth '9 upon the inner face of the member 2 of the casing, whereby rotation of said shaft'lO through the

gears

20, 23, 25, 26, E38 effects lifting movement of said member 2 of the casing. y

The gear upon the shaft 24 also meshes with and drives the gear 29 fast -upon the shaft .30 extending transversely of the inner member l of the casing and mounted in the side walls thereof. Also fast on the shaft 30 is a gear 3l meshing with `a gear 32.-upon the horizontal shaft'v33 likewise mounted in the inner member l of the casing. Thus, in the rotation of the shaft 1() in the elevation of Leraars ing said members to elect the lifting move! nient7 and including a spiral cam, a gear `wheel having arc-shaped teeth, each tooth having a concave/d tace, a bralie for said gearing, and means operatively connected to said brake to move said cam out of meshing relation7 thereby to edect return movement of the casing members.

A jaclr comprisirg a casing composed ci, separable members, gearing tor separating said members to effect the lifting movement, said gearing including .a ratchet, a surrounding memberhaving paivls to engage said ratchet,` a brake surrounding said members, and means to release said brake.

7. A jack comprising a casing composed of separable members, gearingvfor separat ing said members to effect the lifting movement and including means to prevent back movement of said gearing, and a screvv to release said neans preventing bac-lr movement oir' the gear-inox.

d. Il jack comprising a casing composed er" separable members, gearing for separating said members to eiiect the lifting movement and including a ratchet,-a dish having parvis to engage said ratchet, a brake band to engage said disk, and a screw to release vsaid brake band.

9. el jack comprising a casing composed of separable members, gearing for separat- .ing said members to edn-zot the lifting movement and including a ratchet, a disk having paivls to engage said ratchet, a brake band 'to engage said disk, a screw to release said hralre band, and means to disengage said gearing.

lll. A jaclr comprising separable members, one of which is provided with a rack7 gearing to separate said members including a gear constantly meshing with said rack, a driving member mounted for movement in and ont or' driving relation with said gearing and including a disk having one lateral tace thereof formed a spiral cam, and a gear Wheel having arc shaped teeth engaging. With said spiral cam and' screw; means to eilect said movement in and out ot d iving relation.

lL'. A jack comprisingiy separable@ ineinbers, one of which provided Witha rack,

'gearing to separate said members and including a gear constantlyv meshing with said rack, said gearing also including a dislililt'c me iber having on one face a spiral cani toi-mation 20, a gear Wheel having arc shaped teeth engaging with said spiral canin and presenting substantially parallel faces respectivelyv concave and convex and means to swing said disk-lire member into and out of meshing relation with said gear wheel.

l2. A jack composed of separable members. one of which is provided with a rack, gearing to separate said members and iucluding a gear meshing with said rack, a driving member for said gear having swinging .uioven'ient into active and non-active positions, and a screw for imparting such swinging movement to said driving member.

.13. jack having inner and outer casing members, the latter being provided with a rack, a train of gearing having a member meshing with said rack to lift the outer ing member7 said gearing including separable members, and a screw carried with the casing and adapted to eiiect the separation oli' said members, thereby to permit seltloivering of the jack.

14. A jat-lr lniving-inner and outer casing members, the latter being provided with a rack, a train of gearing having :L member constantl)Y meshing `with said rack to litt the outer casing member, said gearing including two separable gears, means carried by the casing to etect engagement and disengagement between said separable gears, thereby to eiiect self-lowering of the jack, and a brake operatively connected to said means to effect engagement and disengagement.

l5. A jack comprising members l.J 2, the former having' a rack 9, gearing including a gear constantly meshing with said rack land also including a cam 20, and screw means to disengage said cam from the gearmg.

16. A jack comprising inembersl7 2, the former having a rack 9, gearing meshing with said rack and including a cam 20, a movable member carrying said cam, and screw 44 operativelyv connected to said member and adapted to shift the saine.

17. jack comprising members l, 2, the former having` a re la 9, gearing meshing with said rack and including a cam QG, a ratchet in driving relation with said gearing7 pawls 235, a disk carrying said pawls, a brake to engage said dislc and a member to eil-'ect disengagement of said cam Q from the gearing and engagement of said b 'aire with said disk.

lS. ifi jack comprising members l, 2, the former having a rack 9,y gearing meshing vwith said rack and including a cam 20, a ratchet 34 in driving relation with said gearing, pawls 85, a disk carrying said pawls, and surrtninding said ratchet, a brake surrounding and adapted to engage said dish, and means to release said brake.

i9. A jack comprising inembe-rs l, 2; the jt'ormer having a rack 9, gearing including a gear constantly .meshing with said rack and also including a cam 20, a ratchet Bel in driving relation with said gearing7 pavvls 35,