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Publication numberUS1758262 A
Publication typeGrant
Publication dateMay 13, 1930
Filing dateDec 6, 1927
Priority dateDec 6, 1927
Publication numberUS 1758262 A, US 1758262A, US-A-1758262, US1758262 A, US1758262A
InventorsFrank D Mahoney
Original AssigneeFrank D Mahoney
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Portable elevator
US 1758262 A
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Description  (OCR text may contain errors)

May 13, 1930. F. D. MAHONEY 1,758,262

PORTABLE ELEVATOR Filed Dec. 6, 1927 2 Sheets-Sheet 1 IT l. II II I Il I II I l I! :I @I II I: I I 'Ve II I I I Il '0 H I H Il Il I I l' |l I I II II I l 'I l I I Il I I I |I I 'I II I l :I 'l 'I ,l1 I ll u II l Y* I'I" gli. J o In 'A I II :I jfl Il v I No I II l Ii

I if I '.''j, I I I 1 lL/l I 5 L 5 vlVfay 13, 1930. F. D. MAHoNEY PORTABLE ELEVATOX Filed Dec. 6, 1927 2 Sheets-Sheet 2 /A/ VENTO/2 FAM/VKL MAHoA/EY A TTONFV lli Patented May 1,3, 1930 FRANK D. MAHONEY; or sAN ANSELMO, CALIFORNIA PORTABLE ELEVATOR Application filed Ileeember 6, 1927. Serial No. 238,123.

flhis invention relates to improvements in elevators of ,the kind used to raise vehicles above lthe surface of floors.

A .fn object of my invention is to provide an mPEO-Vd lifting device having means embodied-therein for conveniently raising and maintaining a load above'the surface of a floor.

Another object of my invention is to proyide an improved -lilftiiig device v.for elevating` loads which may 'be moved .from place to place suitably Vinstalled'in dil'l'ferent locations wfit ont `damaging the Ifloor construction upon which it rests.` i' 4 @.therebjsctsmore QrleSS appa-rent will presea@- themslres er Willbespeifally Pointed out in the assetati@ t0 fbllw .the assomme-ring drawings;

5a iside elevation of a portable elevatorlembodying .my nventn; the .dotted lines showing'r the position of the parts thereof lwhen elevated;V

Fig. 2 is atop planview of a fragmentary partei the elevator; l 'i fig. -3 is an enlarged'view taken on the line of Fig. 1, certain parts being;r shown in cross section;

Fig.A 4 is a sectional view rtaken on the line 4-4`of Fig. 3;

Fig. 5 is a sectional vie-W take-n on the line 5-.5 of Fig. l, the said view showing the device lin anelev-at-ed position;

Eig.- A6 i-s .-a sectional View taken on the line -ei'of Fig. ,landisa-top plan viewofan end of the elsa/eter showing the construction and arrangement 4of the par-ts of the safety means.

Referringto the drawings, the numeral 1 represents a casing having a ram 2 movably lvo'eatedlt'herein A pipe "'having a control valve-t attached'therebn vis adapted to carry suitable quantities o-compressedair or liq- -uidte thecasin 4for. elevating the ram.

Securely attachedto the top of the casing is a horizontally. disposed' plate 6, the ends of which are suitably secured as by welding to two upright supporting members 7. The supporting mem-bers 7 are secured at their lower ends to two horizontally disposed U-shaped channel bars 8, While two T-shaped and vertically disposed guide members 9 are secured i as by welding to the inner surface of the said supporting members. Y

The upper end of the ram 2 is provided with an enlarged part 1 0 to which are secured the ends of substantially upright rods 1,1. The rods 11 movably extend through openings located in the plate Gand are attached at =their ends as by nuts to U-shaped members 12. Secured to the outer lsides vor' the U-.shaped members 1 2 lare guides 1,3, the two outwardly disposed parts thereof being movably positioned around the inwardly projecting parts of the guide members 9.

Movably attached to the two downwardly disposed parts of each of the U-shaped members 12 as by pins which are secured to the said members, are rollers 14 or other slidable inea-ns which are adapted to support two hori- Zontally disposed bars 15, that comprise a supporting frame for supporting a lead placed thereon. V

The channel bars I8 are. each secured adjacent their endsas by welding o r bolts to a plurality of transversely extending; U-shaped supports land 17 which serve to support and maintain theV various parts of the device in their proper positions. The U-shapedsup-` ports 17 are separated from each other by predetermined interveningr spaces, and each is provided intermediate its ends with a pair of upwardly extending U-shaped projections 18. Pivotally attached to each of the projections as by pins `are lever arms 19, the opposite ends of which -movably extend around transversely disposed rods 2 The rods 20 are suitably secured at their ends to the horizontally disposed bars l5.

Adjacent the ends of the channel bars 8 I have provided a safety means for maintain- 'j movably located therein,

ing the horizontally disposed bars and the load in an elevated position, which is shown in detail in Figs. 1 and 7. rl`he safety means comprises two bars 21 having teeth on their underneath edge, and said bars being pivotally attached to the channel bars 8 by pins or other suitable means. A pair of arms 22 are movably attached around the rod 20, and are provided at their opposite ends with outwardly projecting parts 23 which are adapted to move over and become lodged between the teeth of the bars 21 when the bars 15 are elevated. A pair of springs 24 attached to the ends of the bars 21 and the channel bars S serve to maintain the bars 21 in a downwardly disposed position until a lever rod 25 is moved upwardly against the said bars by pressing the foot pedal 26.

ln operation a vehicle A or other load to be raised is placed over the bars 15, and suitable quantities of compressed air or liquid are allowed to pass into the casing 1 through the pipe 3. As the ram 2 is elevated by the compressed air or liquid passing into the casing, the. rods 11 attached to the top of the ram pull the U-shaped members 12 in an upward direction, the guides 13 moving over the guide members 9 and maintainingr the lifting parts of the apparatus in their proper operating positions. As the ram is elevated the rollers 14 moving in an upward direction with the U-shaped members 12, bring with them the two horizontally disposed bars 15, the latter as they are raised moving forwardly over` the said rollers. The ends of bars 19 moving on their pivots, swing upwardly and support the bars 15 at diferent points thereon. The bars 15 with the load thereon may be maintained by the pressure of the compressed air or liquid in the casing 1 at any desired height, and the safety means by the engagement of the projections 23 with the teeth of the bars 22 may securely maintain the said load in an elevated position without danger of its falling.

'lt is obvious to those skilled in the art that my invention may be embodied in other forms than the one illustrated, so for this and other reasons it is to be understood that the appended claims are to be considered as definitions of the limits my invention may assume.

Having described my invention what l claim is:

1. An elevator comprising a casing having a ram movably located therein, an upright rod attached at one end to the ram and provided with a roller at its other end, a horizontal bar supported by the roller and adapted to be raised and moved forwardly by the ram when elevated, and means for supporting the ends of the bar, whereby the bar may be maintained in a substantially horizontal position.

2'. In an elevator, a casing having a ram a rod attached to the ram, a bar carried bythe rod, slidable means carried by the rod for allowing the bar to move forwardly when the ram is elevated, and means attached to the bar for supporting the same in a substantially horizontal position.

3. In an elevator, a casing having a ram movably located therein, a plurality of rods attached to the ram, a plurality of bars carried by the rods, slidable means carried by the rods for allowing the bars to move forward when the ram is elevated, and means for supporting the bars in substantially horizon tal positions.

4. In an elevator, a casing having a ram movably located therein, supporting a frame carried by the ram, slidable means carried by the ram f-or allowing the frame to move forwardly when the ram is elevated, and means for supporting an endof the frame.

5. In an elevator, a casing having a ram movably located therein, a supporting frame, means connecting the frame and the ram, whereby the frame may be raised and lowered by the ram, rotatable means carried by the first mentioned means for allowing the frame to move forward when the ram is raised, and means for supporting an end of the frame.

6. In an elevator, a casing having a ram movably located therein, a plurality of upright rods secured at ends thereof to the ram, each of said rods being provided at its opp-osite end with a roller, a plurality of horizontal bars resting on the rollers and adapted to be raised and moved forward by the movement of the ram in an upward direction, and means movably attached to the bars for supporting the ends of the bars and maintaining the said bars in substantially horizontal po- Sitions.

7. 1n an elevator, a casing having a ram movably located therein, a plurality of upright members secured to the ram, guides attached to and coacting with the upright members for maintaining the members in upright positions, and a plurality of horizontally disposed bars movably supported by the upright members.

8. In an elevator, a casing having a ram movably located therein, a plurality of upright members secured to the ram, a plurality of horizontal bars carried by the upright members, means associated with the bars for maintaining them in a horizontal position and safety means for maintaining the bars in an elevated position when once they have been raised.

9. An elevator comprising a casing having a ram movably located therein, a plurality of upright members secured at ends thereof to the ram, each of said members being provided with a roller at its other end, a plurality of horizontal bars resting on the rollers and adapted to be raised by the upward movement of the ram, and means pivotally attached t0 the bars and a base for supporting the ends thereof and moving them forward when they are being elevated.

l0. In an elevator, a ram, an upright member carried by the ram, a load supporting frame carried by the upright member, and a guide coacting With the upright member for maintaining the upright member in a Substantially vertical position.

FRANK D. MAHON EY.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5190122 *Sep 12, 1991Mar 2, 1993Andvantage Lift Systems, Inc.Safety interlock system
Classifications
U.S. Classification254/91, 254/93.00L
International ClassificationB66F7/08
Cooperative ClassificationB66F7/08, B66F7/0641
European ClassificationB66F7/06S, B66F7/08