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Publication numberUS450447 A
Publication typeGrant
Publication dateApr 14, 1891
Filing dateJan 27, 1891
Publication numberUS 450447 A, US 450447A, US-A-450447, US450447 A, US450447A
InventorsCalvin Ii
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Device for lifting photograph-negatives
US 450447 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

No Model.)


No. 450,447. Patented Apr. 14, 18 91.





SPECIFICATION formingpart of Letters Patent No. 450,447, dated April 14, 1891.

Application filed Ianuary 27,1891. Serial No. 379,227. (N0 model.)

To all whom it may concern.-

Be it known that I, CALVIN H. BUCHWVAL TER, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Devices for Lifting Photograph-Negatives and other P]ates,whieh improvement is fully set forth in the following specification and accompanying drawings.

Myinvention relates to a device for lifting photographicand other negatives; and it 0011- sists, first, of a thimble with a suction-cup connected therewith. 4

It further consists of a thimble having a suction-cup secured thereto by a tubular connection.

It further consists of a connected suctioncup and thimble having an interposed washer or plate.

Figure 1 represents a perspective view of a device embodying my invention in operative position applied to a negative. Fig. 2 represents a central longitudinal section of the device before applying it to the negative.

Similar letters of reference indicate corresponding parts in the two figures.

Referring to the drawings, A designates a thimble of anyordinaryconstruction adapted to receive the end of a finger, so as to be retained thereon.

B designates a suction cup, of rubber, having a depending rim 0 and a concave under face, forming an air-chamber D. The cup B is connected with the thimble A by means of a tubular rivet E, which passes through openings in the end of said thimble and the base of the cup and has its ends headed, so as to securely hold together said thimble and cup.

To give uniform pressure to the cup,awasher or disk Fis secured on the rivet between the thimble and the said cup.

In manipulating the device the cup, by

means of the thimble, is pressed smartly upon the surface of the negative, flattening the said cup and exhausting the air from within the chamber D, the washer F, owing to its form, causing a uniform pressure of the cup. As the air'is exhausted in the chamber D the cup will take such hold of the negative, so that the latter can be lifted from the dish or tray and be carried as desired. When it is necessary to release the said negative, the finger is removed from over the end of the opening in the tubular connection E, so that air may enter the cup, and thus destroy the vacuum, whereupon the cup is released.

It will be seen that the device is simple and inexpensive in character, though of great practical utility, and one which can be easily operated.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. A device for the purpose described, consisting of a thimble and a suction or air cup, substantially as described.

2. A thimble with an air orsuction cup and an intervening washer or disk, said parts being combined substantially as described.

3. A device for the purpose named, consisting of a thimble, a suction-cup, and a tubular connection for said cup and thimble, said parts being combined substantially as described.

4. A devicefor the purpose named, consisting of a thimble, an elastic suction-cup, a tubular connection for said cup and thimble, and a Washer or disk on said tubular connection between said thimble and cup, said parts being combined substantially as described.




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US2566175 *Nov 29, 1945Aug 28, 1951Ferdinand Danielsson Yngve AugSheet feeding apparatus for printing presses or the like
US2908473 *Apr 29, 1955Oct 13, 1959Snyder Edward RBottle support
US4167283 *Apr 3, 1978Sep 11, 1979Feldman Michael AApparatus for applying a soft contact lens
US5875489 *Nov 17, 1997Mar 2, 1999Couto; Karen P.Device for adjusting medical devices
US5879038 *Dec 18, 1997Mar 9, 1999Morgan; Richard RoderickContact lens handling device
US20130014308 *Jul 13, 2011Jan 17, 2013Yennifer FelicianoTyping-mate
International ClassificationA41D13/08
Cooperative ClassificationY10S220/19, A41D13/087, Y10S292/28
European ClassificationA41D13/08B8