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Publication numberUS2427870 A
Publication typeGrant
Publication dateSep 23, 1947
Filing dateMar 11, 1946
Priority dateMar 11, 1946
Publication numberUS 2427870 A, US 2427870A, US-A-2427870, US2427870 A, US2427870A
InventorsMitchell Irving L
Original AssigneeMitchell Irving L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2427870 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)


Filed March 11, 1946 :2 Sheets-Sheet 1 [Kim l. L. MITCHELI;

PAPER WEIGHT Sept. 23, 1947'.

2 Sheets-Sheet 2 Filed March 11, 1946 Mr w p in gL.Mvl'chell, glw

Patented Sept. 23, 1947 UNITED STATES PATENT OFFICE PAPERWEIGHT Irving L. Mitchell, Rockville Centre, N. Y. Application March 11, 1946, Serial No. 653,685 7 Claims. (01. 120-82) The present invention relates to a device suitable as a, desk ornament, or the like, and which is particularly useful as a paper weight.

The object of the invention is to provide a stable construction which is readily handled and which, in addition, embodies an educational feature.

The novelty and utility of the invention will be understood from the following description and the accompanying drawings.

Referring to the drawings:

' Figure 1 is a top plan view of the invention;

Figure 2 is a vertical section on the line 2--2 of Figure 1;

Figure 3 is a side of the invention;

Figure 4 is a view assmbled relation;

Figure 5 is a top plan view of one part of the device, and

Figure 6 is a bottom plan view of the other part of the device.

Figure '7 is a vertical section of a modified embodiment of my invention;

Figure 8 is a bottom plan view of the lens member of the modified construction, and

Figure 9 is an end view of the modified construction with the parts in assembled position.

My device comprises a base member In and a top lens member ll. Referring to Figure 4, it will be seen that the base member is in the form of a fiat circular member having a central raised portion or pedestal member l2 which is substantially cylindrical. The pedestal is provided with an intermediate circumferentially extending ledge l3 for a purpose which will be described later. Adjacent the upper edge, the raised member I2 is provided with two or more outwardly extending projections or lugs I4. In the embodiment illustrated, the two lugs M are diametrically disposed, being formed by the ends of a pin carried in the raised member I2.

The upper surface of provided with a cylindrical depression or recess l5 adapted to receive a felt liner l6 or the like. Removably secured in any suitable manner upon the top surface of the liner is a pictorial representation or image I! of any suitable character.

The lens member H comprises a transparent cylindrical lens formed of transparent white methacrylate resin such as Lucite, or Plexiglass, glass or any other suitable transparent material. The lens can also be made of colored transparent plastic material or glass. In this conelevation, partly in section,

showing the parts in disthe raised member is nection, the base 10 will be made of similar material as the lens member or, of some suitable opaque or non-transparent material, e. g., metal such as aluminum.

As will be observed, the lens member H comprises a segment of a cylinder and has an upper curved or viewing portion l8 and a lower flat portion [9. A circular recess 20 is'formed in the flat portion IQ of the lens member whereby the lens member is adapted to be rotatably mounted about the raised portion 12 of the base member H]. By reference to Figure 4, it will be noted that the vertical wall of the recess 2|] is provided with a circumferentially extending groove 2|, which groove opens into a pair of diametrically opposed slots 22 having inclined bottoms 23 sloping toward the groove.

In assembling the device, the slots 22 are aligned with the projections M in the pedestal member and the two members are brought together, with the lugs l4 disposed in the slots 22, whereupon the inclined surfaces 23 will guide the pins l4 toward the bottom of the circumferential groove. Thereafter relative rotation of the two members will cause the projections to engage in the groove, thereby permitting the two member to rotate relatively to each other while being held securely together. In the embodiment illustrated, I have shown the raised member l2 as provided with the projections l4, and the wall of the recess 20 as provided with the groove 2|; but this manner and means for uniting the parts for relative rotation may be reversed.

By reference to Figure 2, it will be observed that the bottom of the cylindrical recess 20 is flat and parallel with the flat portion l9 of the lens member. The upper surface ofthe raised member l2 carrying the pictorial representation is likewise fiat and when the twomembers are assembled, the plane of the pictorial representation is parallel with the bottom surface of the recess 20.

The viewing portion of the lens member II is at least of an area substantially coextensive with the area of the pictorial representation.

With the parts in assembled condition as described, and the base held stationary, the rotation or oscillation of the lens member will cause the illustrative pictorial representation or image to acquire a Variable distorted appearance. This will readily be apparent upon a comparison of Figures 1 and 5, the latter showing the pictorial representation as it appears with the lens member removed, while Figure 1 shows the distorted appearance when the device is assembled and the lens member occupies the full line position shown in this figure. The extent of the distortion varies with the relative angular positions of the base and lens members. Thus, the construction, in addition to its' utility as a paper weight, is useful from an educational standpoint in that it offers a ready and simple means of demonstrating the properties of a cylindrical lens. The present construction permits easy assembling or disassembling of the parts and the pictorial representation may be removably carried on the top of the pedestal member so that a variety of demonstrations may be readily carried out.

To disassemble the parts for the purpose of replacing the pictorial representation, it is only necessary to rotate the lens member relative to the base until the projections M are aligned. with the slots 22, whereupon the two members may be separated from each other by a simple lateral displacement.

Referring to Figure 4,. the groove 2| and the projections l4 rotatably received. therein, constitutea bearing for the rotation of the respective members, but it is preferable to employ'the ledge I3- as an additional bearing surface for rotatably supporting the outer marginal area of the bottom. surface of the lower fiat portion: [9' of the lens member.

Whilethe deviceof the present invention may be manually operated; it is alsosusceptible of continuous and automatic operation by mechanical means; e; g;, in the casewhere the device is used for educational or advertising purposes or where the structure: is of such: substantial size as to. make: hand operation. inconvenient. The rotary or oscillatory mechanical movement of one of the members may be effected in any suitable manner. The constructionshown. in Figures 5 to '7 eXemplifies one means for mechanizing the operation of the parts to effect an oscillatory movement of the lens member. As there illustrated, the base member H1" isheld stationary and the lens member H is moved with respect thereto by means which will now bedescribed; Secured; to the bottom wall of, the base member I" is a motor 25 of any'suitable type. The motorshaft rotates through a; reduction gear (not shown) a crankshaft 26 which'extends verticall'y upwards through an opening in the basemember HI and" the free end' or: crankpin extension 21' thereof engages in an elongated recess 28 in the lower surface of the lens member ll". Due to the eccentric position. of the axis of rotation of the. shaft 26- and pin- 21- with respect tothe vertical axis of rotation of the lens member and the engagement of the crankpin in the recess 28, the rotation ofthe. crankpin will impart an oscillatory motion to. the. lens member II and thereby produce distortion of. the image as described above. 7

Instead of imparting an oscillatory motion to the lens member, this last member may be fixed and the base-member given. an oscillatory motion. Also, instead. of employing. an. oscillatory motion, one or the other of the members may be. rotated with respect to the other. The motor or prime mover 25Jwill be operated at various speeds depending upon the subject being displayed and the effect desired.

4 While I have illustrated a crank and slot arrangement for eifecting oscillatory motion of the lens member, it is to be understood that such motion or rotary motion of the lens member may be produced by other suitable means, such as cam devices or gearings.

While I have illustrated the base members I 0 and 10' as being circular, it will be understood that they may be of any desired contour.

I claim:

1. A device of the character described comprising a base member, a pictorial representation supported on said base member, and a cylindrical lensrotatably mounted above the pictorial representation and over the same, rotation of the said'lens producing a distorted image of the pictorial representation as viewed through said lens.

2. A device of the character described comprising a base member having a raised portion, a pictorial representation supported on the upper surface of the raised portion, a cylindrical lens'member having a recessed bottom adapted to be rotatably mounted about said raised portion, said lens being. disposed over. said pictorial representation, rotation of the said lens producing a distortedv image of the pictorial representation as viewed through said lens.

3. A device according to claim 2 wherein the raised portion on the base member is received within said recess, and the wall of said. recess and said raised portion have co-operating means for connecting the two together and permitting relative rotation thereof.

4. A device according to claim 2 in which. the surface of the bottom of the recess. is fiat and parallel to the plane of the pictorial representation.

5. A device according to claim 2 wherein the raised portion on the base member is received Within said recess, and the wall of said recess and said raised portion have co-operating means for connecting the two together and permitting relative rotation thereof, saidconnecting meanscomprising a groove on one member and projections 45 on the other said member received within said groove.

6. A device according to claim 2 wherein the raised portion is provided with outwardly extending projections and the recess in said lens is 50 provided with a groove to receive said projections.

7. A device according to claim 2 in which the raised portion is provided with an intermediate ledge formin a bearing for the lens member.


REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,264,267 Bugbee Apr. 30, 1918 511,678 Brown Dec. 26, 1893 1,204,690 Ryer Nov. 14, 1916 1,292,901 Smith Jan. 28, 1919 1,777,859 Recker Oct. 7, 1930 1,346,138 Smalley July 13, 1920 396,519 Swift Jan. 22, 1889

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US396519 *May 14, 1888Jan 22, 1889 Paper-weight
US511678 *Jun 22, 1893Dec 26, 1893 Art of securing pictures to watches or other articles
US1204690 *Jul 8, 1916Nov 14, 1916Elmer Le Roy RyerEye-testing device.
US1264267 *Nov 24, 1917Apr 30, 1918American Optical CorpMagnifier.
US1292901 *Dec 13, 1916Jan 28, 1919William Morris HoughtonDistortion device for attachment to cameras and similar apparatus.
US1346138 *Mar 29, 1919Jul 13, 1920Paul C GmalleyFlash-light device
US1777859 *Apr 16, 1930Oct 7, 1930Chase Companies IncPlant-marker
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2521558 *Feb 20, 1946Sep 5, 1950Alvarez Patent CorpMagnifying picture viewing device
US2619870 *Nov 30, 1950Dec 2, 1952Torricelli Creations IncDistortion image device
US3312197 *Oct 15, 1965Apr 4, 1967Smith Forrest WFacsimile coin embedded in plastic, and method of making same
US4014122 *Sep 22, 1975Mar 29, 1977Woods Oscar JPaperweight with screw threaded bottom cap
US4040724 *Aug 22, 1975Aug 9, 1977Klingler Josef FMagnifying display article
US20050211656 *Mar 24, 2004Sep 29, 2005Frank MuirBottle cap with built-in magnification
U.S. Classification40/358, 63/31, 428/13, 359/804, 359/809
International ClassificationB43M9/00
Cooperative ClassificationB43M9/00
European ClassificationB43M9/00