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Publication numberUS2420811 A
Publication typeGrant
Publication dateMay 20, 1947
Filing dateMar 19, 1946
Priority dateMar 19, 1946
Publication numberUS 2420811 A, US 2420811A, US-A-2420811, US2420811 A, US2420811A
InventorsBrewster Sol, Miller William
Original AssigneeBrewster Sol, Miller William
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Glass-lifting or carrying device
US 2420811 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

May 20, 1947- s. 'BREWSTER Er AL 2,420,811

GLASS-LIFTING OR CARRYING DEVICE Filed March 19, 1946 j u I VENTORS 2 BY www we@ Patented May 20, 1947 UNITED STATES PATE NT ori-ICE GLASS-LIFTIN G OR CARRYING DEVICE Sol Brewster and William Miller, New York, N. Y. Application March 19, 1946, Serial- No. 655,631

` 2 Claims. 1

This invention relates to a device to be used in lifting or carrying panes of glass or other materials of similar shape, and has particular relation to a device of this type, which may be firmly attached to the article to be lifted or carried by suction and may be separated from said article by relieving the suction.

Accordingly, the main object of the present invention is to provide a device which may be firmly attached to` a substantially plane and smooth surface of an article by means of a disclike element consisting of elastic, soft rubber, or similar material, said element being placed on said surface and subjected to suction. Another important object of this invention is to provide a device of the above mentioned type, in which the degree of suction to which the disclike element is subjected may be adjusted to the weight and physical character ofthe article to be lifted and/or carried.

A further object of this invention consists in providing a device of the above mentioned type, which is of sturdy construction and consists of relatively few and simple construction elements.

Other objects and the advantages of the invention will appear from the following specification and claims and the appended drawings which show by way of example, a preferred embodiment of the invention, and in which Figure 1 is a side elevation of a lifting device according to the invention, in inoperative position;

Figure 2 is a plan view of the device shown in Figure 1, and

Figure 3 is a section along line 3--3 of Figure 2.

Referring now to the drawings in detail, I is a circular disc of soft rubber or other elastic material of rubber-like character, which preferably consists of two or more laminated sheets of rubber or the like. As shown in Figure 3, a circular plate 2, of smaller diameter than disc I, is embedded in disc I. This plate is rigid, consists preferably of metal, and is rigidly connected with a preferably cylindrical stem 3. A cup-like member generally designated by reference numeral 4, rests on the upper surface of disc I while the other circular surface of the disc I is exposed. This cup-like member consists of one piece. It has a spherical portion 5, a cylindrical portion 6, and a flat top portion l, the latter being provided with a central opening and an inturned tubular liange 8 which is .threaded on its inner surface and adapted to receive adjusting knurled at I I, and with an outer thread registering with the inner thread of flange 8. The adjustng member 9 also carries a washer 2l and a lock-washer 22. The cylindrical bore of element 9 is adapted to receive stem 3, which is freely movable in this cylindrical bore. A cam lever I2 bifurcated as at I3, is pivotally connected with stem 3 by means of pivot I4. Upon turning this lever from its position shown in full lines to the position Shown in dotted lines in Figure 3, the normally flat disc I is formed into the cupped shape shown in dotted lines, as a consequence of the plate 2 and stern 3 being lifted by turning cam lever I2. By forming the normally flat disc I into cupped shape, suction is created between the exposed surface of disc I and the plane surface of the article to be carried, on which the disc I rests, and the amount of this suction may be decreased or increased by turning circular flange 4Il) clockwise or counter-clockwise, respectively, and thus lowering or raising the adjusting member 9. The adjustability of the device is important, as it has been found that a moderate amount of suction is sufficient in handling relatively light articles, for example glass panes, whereas a strong suction effect, which would even .be harmful in handling glass panes, is necessary in lifting and carrying heavy articles.

As shown in Figure 3, the spherical portion 5 of cup-like member 4 has a reinforced lower circumferential edge I5, the flat annular surface of which rests on the upper Surface of disc I. The outer diameter of this annular surface may be equal to or is preferably somewhat smaller than the diameter of disc I.

The inturned ends I6, I6 of a U-shaped bar I1 provided with a handle element I8, are pivotally connected to the cylindrical portion 6 of the cup-like member 4, and serve as a handle in lifting and/or carrying the device and .the article, l

to which the device is attached by suction.

In order to operate the device, itis placed with the exposed flat surface of disc I on the smooth, plane surface of the article to be lifted or carried, the device being in the inoperative position best shown in full lines in Figure 3. Lever 9 is then turned to the left, viewed in Figure 3, in order to press the exposed surface of disc I against the surface cf the article, lift stem 3 and plate 2 connected therewith, and thus form disc I into the cupped shape and create the necessary suction. In this condition, the exposed surface element 9. This adjusting element 9 is a tubular of disc I adheres firmly to the surface of the article to be lifted or carried, and such adherence will last until the original flat shape of various modifications Without departing from,

the spirit and scope of the invention as defined in the appended claims.

What is claimed is: 1

1. In a device of the character described, in combination a normally fiatgdiscylike member consisting of an elastic rubber-like material, with a rigid plate embedded in said disc-like member, and rigidly connected with a centrally arranged stemiforming. a; right. angle With.the surfaces .of tlie disclike member, a cupflike member consist-- ing vof one ,.piece,l resting onY one Vsurface ofHthe.

disc-like member, having aJsphericalV portion,A a

cylindrical portion, a at .top portion, and an` inturnedtubular flange internally threaded andY centrallyarranged .insaid top portion, a tubular adjusting member provided With'an outer thread and a centralbore and adapted to be screwed into and adjustable in .said tubular flange,` said stem. projecting Vthroughand being freely movable inA said centralbore, a cam lever pivotally connectedA with the free end of the stem and coacting with the top of said tubular adjusting member for forming the iiat disc-like member into a cupped shape, and a handle attached to the cylindrical portion of the cup-like member.

2. In a device of the character described, in combination a normally flat, circular disc-like member consisting of an elastic rubber-like material, with a rigid plate embedded. in said disclike member, vand rigidly connected with a centrally arranged stem forming a right angle with the surfaces of the disc-like member, a cup-like member consisting of one piece, resting on one surfaceothe disc-like member, having a spheri- Aca1,.,portio r r,of adiameter smaller than that of being freely movable insaid central' bore, a cam leverpivotally connected Withrthe vfree endo the' stem` and coacting with the top-ofrsaid tubularv adjusting member for formingthe at disc-like'- member into a cupped shape, and a handle attached to the` cylindrical portion of' the cup-like member;

SOL -BREWSTERg WILLIAMl MILLER;-

Non-Patent Citations
Reference
1 *None
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2620217 *Sep 10, 1948Dec 2, 1952Harry H LenhartVacuum handling device
US2776857 *Feb 23, 1952Jan 8, 1957Heppenstall CoVacuum lifter
US2908467 *Feb 18, 1957Oct 13, 1959John C HockeryDevice with suction type fastener
US3240461 *Feb 2, 1965Mar 15, 1966Singleton Alan MartinSuction devices
US4846429 *Jul 21, 1988Jul 11, 1989Robert S. ScheurerReleasable suction cup assembly
US5867965 *Mar 25, 1997Feb 9, 1999Pilz; JackTile setting machine
US6039371 *Aug 4, 1997Mar 21, 2000Smith; MarkVacuum stretching and gripping tool and method for laying flooring
US6547033 *Feb 21, 1997Apr 15, 2003Rollgliss AgSafety device
US6745868Jan 28, 2003Jun 8, 2004Rollgliss AgSafety device
US7004521 *Jan 3, 2003Feb 28, 2006Ishii Chokokogu Mfg. Co., Ltd.Suction-holding device
US7887109 *Dec 1, 2008Feb 15, 2011Lih Yann Industrial Co. Ltd.Stepwise powerful suction device
US7984697 *Aug 20, 2008Jul 26, 2011Nikolina GrbicPet leg restraining device during bathing, grooming, nail clipping, and exams
US8104809Nov 4, 2008Jan 31, 2012Mayhugh Kent RSuction cup with warning ring
EP0896113A2Aug 3, 1998Feb 10, 1999Mark SmithVacuum stretching and gripping tool and method for laying smooth flooring
Classifications
U.S. Classification294/187, 248/205.8
International ClassificationB65G49/06
Cooperative ClassificationB65G2249/045, B65G49/061
European ClassificationB65G49/06B