Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1350970 A
Publication typeGrant
Publication dateAug 24, 1920
Filing dateJan 22, 1920
Priority dateJan 22, 1920
Publication numberUS 1350970 A, US 1350970A, US-A-1350970, US1350970 A, US1350970A
InventorsHutchison Arthur Edwards, Krah Harry
Original AssigneeHutchison Arthur Edwards, Krah Harry
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Base for jacks
US 1350970 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)




1 350, 970. Patented Aug. 24, 1920.






Specification of Letters Patent.

Patented Aug. 24, 1929..

Application filed January 22, 1920. Serial No. 353.259.

To all whom it may concern:

Be it known that we, ARTHUR E. HUTOHI- SON and HARRY KRAH, both citizens of the United States, and residents of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new andlmproved Base for Jacks, of which the following is a full, clear, and exact description.

The present invention relates to new and useful improvements in jacks, and it pertains more particularly to lifting jacks especially employed as an accessory of motor vehicles. In jacks of this type difliculty has been experienced in maintaining the jacks in true vertical alinement during the lifting operation.

It is one of the objects of the present invention to provide means whereby the lifting operation is carried out with greater facility than with jacks as at present constructed.

The invention consists of a rigid base adapted to be removably secured to a jack of ordinary construction when the same is in operation, said base being capable of removal therefrom when the jack in not in operation.

The invention further consists in so constructing the securing means for the jack that the latter may be adjusted with respect to the base.

With the above and other objects in view reference is had to the accompanying drawings in which Figure 1 is a perspective view showing the jack in place upon the base;

Fig. 2 is an inverted plan View of the base,

\ and Fig. 3 is a detail sectional View. Referring more particularly to the drawings, the device comprises a base 5, which is preferably rectangular in form. This base is the base and merging into said point 7, is a reinforcing rib 9. Between the ends of each of the reinforcing ribs 8 and 9, said ribs are provided with suitable bolt-head-receiving recesses 10, and said recesses are formed by terminating the ribs as at 11, and forming a continuous wall 12 of substantially oval shape.

The base is provided in each of the boltreceiving recesses 10, with a slot 13, which passes entirely through said base, and said slots have straight side walls 14, the purpose of which will be hereinafter described.

The reference character 15 designates bolts, and one of these bolts is adapted to be passed through each of the slots 13 from the rear face of the base 5, the heads of these bolts lying within the bolt-receiving recesses 10, as designated in Fig. 2. These bolts 15 are provided near their heads with square portions 17, and these square portions 17 are adapted to engage the straight side walls 14 of the slots 13 to prevent a rotating movement of the bolts within the slots.

The free threaded end of each of the bolts 15 is adapted topass through a lug or dog 19, and these lugs or dogs 19 are movable with respect to the top face of the base 5 for a purpose to be hereinafter described. The lower face of each of these dogs 19 is serrated as at 20, and these serrations 20 are adapted to interengage with the serrated surfaces 21 on the base 5 adjacent the bolt openings or slots 13. Threaded upon the free end of each of the bolts 15 and adapted to form the means for tightening the dogs or lugs 19 in position, is a nut 22, and interposed between each of the nuts and the top face of each of the dogs 19, is a washer 23.

The device operates in the following manner:

The reference character 30 designates a jack of the ordinary type, and 31 indicates the base thereof. This base 31 is adapted to be received upon the base 5, and after it has been thus positioned, the nuts 22 are loosened to permit of a movement of the dogs or lugs 19, so that their cut-out portions 25 will overlie the base 31 of the jack 30. WVhen these lugs have been thus positioned, the nuts 22 are tightened to draw the serrated faces 20 and 21 of the dogs 19 and the base 5, respectively, into engagement with each other to secure the dogs against accidental displacement.

By this construction it will be seen that a flat support for the jack 30 is formed by the base 5, and that, at the same time, said base is removable from the jack in order that-the parts may occupy comparatively little space when not in use.

plurality of elongated openings, a plurality of serrations surrounding each of the openings on the top face of the base, a lug having a plurality of serrations adapted for interengagement with the serrations surrounding the openings in the base, bolts having I 10 squared portions, the square portion of said bolts being adapted to be received within the elongated openings in such a manner as .to prevent turning of the bolts, said bolts passing through the lugs, and nuts adapted for engagement with the bolts whereby the lugs are adjustable relative to the base for rigidly securing a jack in position on the top face of said base.


mum! KRAH. I

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2448413 *Mar 29, 1947Aug 31, 1948Borghesi HaroldBase for stands
US2780431 *Sep 22, 1953Feb 5, 1957Sheldon & Co E HFurniture pedestal base
US3161401 *Jun 25, 1962Dec 15, 1964Starkey Ernest WSupporting means for the jack of trailers and like
US3271006 *Jul 6, 1962Sep 6, 1966BrownPortable service lift
US3414227 *Feb 6, 1967Dec 3, 1968Gewerk Eisenhuette WestfaliaFoot plate for pit props
US3493201 *Mar 15, 1967Feb 3, 1970Nash Engineering CoUniversal support base for pumps,compressors or the like
US3693555 *Mar 4, 1970Sep 26, 1972Holtzmann Donald RFoldable service table
US3895768 *Feb 8, 1974Jul 22, 1975Scheck Harold GSecurity clamp
US4343457 *Oct 10, 1980Aug 10, 1982Siano James CRail jack adaptor
US4486004 *Dec 22, 1982Dec 4, 1984Drewitz Arthur OJack stand
US4765593 *Sep 1, 1987Aug 23, 1988Michael HungHydraulic jack having a removable hydraulic cartridge
US4948080 *Aug 11, 1988Aug 14, 1990Jack Stephen WBicycle drink holder
US5664762 *Sep 11, 1996Sep 9, 1997Ausco Products, Inc.Automotive screw jack
US5743505 *Oct 19, 1995Apr 28, 1998Hms Mfg. Co.Base extension for tree or display stand
US6217005 *Sep 2, 1999Apr 17, 2001John J. ScottLoad lifting and supporting device
US6375134 *Apr 13, 2000Apr 23, 2002Ronald A. RohmAdjustable container holder
US6644615 *Jul 3, 2002Nov 11, 2003Larin CorporationStabilized jack stand
US6755384 *Apr 18, 2002Jun 29, 2004Hitachi Chemical Co., Ltd.Flexible platform for liquid handling robots
US20050017223 *Jul 22, 2004Jan 27, 2005Lucas Brett LewisSupport for a vehicle jack
US20060065881 *Sep 26, 2005Mar 30, 2006Bishop WaltonGdl
US20140167369 *Apr 17, 2013Jun 19, 2014Hon Hai Precision Industry Co., Ltd.Chuck
DE3611317A1 *Apr 4, 1986Oct 8, 1987Storz E A KgVehicle jack
U.S. Classification248/346.3, 254/1, 254/DIG.100, 279/8
International ClassificationB66F13/00
Cooperative ClassificationY10S254/01, B66F13/00
European ClassificationB66F13/00