US 2732868 A
Description (OCR text may contain errors)
Jan. 31, 1956 J. F. BARTA 2,732,868
ROTATABLE WORK PIECE SUPPORT AND CLAMP Filed Feb. 9, 1953 27 29' INVENTOR.
JOSEPH F. BARTPr Un t a??? ;,aee..r* 1??? ROTATABLE WORK PIECE SUPPORT AND CLAMP Joseph F. Barta, Milwaukee, Wis.
Application February 9, 1953, Serial No. 335,905
1 Claim. (Cl. 144-288) My invention relates to work piece supports and more particularly to a support for a work piece while it is being worked on.
The prime object of my invention is to provide such a support that is adjustable for clamping a piece of linoleum or the like while the surface thereof 'is' beingcarved.
Another object of my invention is to provide a rotatable support for a block of linoleum or work piece, which support may be clamped to a work table or the like, permitting free use of both hands while the tools are moved in .a direction away from the operator and enabling the support to be revolved with one hand while the carving tool is being manipulated with the other hand by the operator.
It is manifest to anyone familiar with the art of carving linoleum that it is far more economical to use portions of linoleum onto which a design is to be carved, before mounting the finished portion onto a block by means of an adhesive agent. Inasmuch as, if the design is not properly executed, the portion of linoleum only is wasted and may be replaced with a new portion which is comparatively inexpensive, prior to being mounted onto the conventional wood block. It is also manifest that quite frequently for home use and when only a few prints are to be reproduced, it is not necessary or convenient to mount the carved portion of linoleum onto a block. It is, therefore, advantageous to work on the unmounted sheet of linoleum and the device as illustrated, described and claimed herein provides a means for supporting the sheet of linoleum onto a revolving surface plate by means of adjustable clamps, which surface plate is mounted onto a base arranged for fastening to the surface of a work bench or the like. This arrangement permits the operator to manipulate the carving tool with one hand and revolve the surface plate supporting the linoleum with the other hand, and inasmuch as the base supporting the surface plate is clamped to a work bench, the carving tool can always be pushed away from the operator thereby eliminating all danger or hazards.
Other and further objects of my invention will become more apparent as the description proceeds when taken in conjunction with the drawings, in which:
Figure l is a perspective view of the entire assembled device equipped with a conventional C clamp attached to the base by means of a chain.
Figure 2 is a longitudinal cross-section of the assembled device as shown in Figure 1, and clamped to the surface of a work bench by means of a C clamp, and
Figure 3 is a top or plan view of the assembled device.
Similar characters of reference indicate corresponding parts throughout the several views and referring now to the same, the character shows a base which may be of rectangular construction as shown, or be constructed in any other shape or form. Onto the base 10 is mounted a surface plate shown as 11 which may also be of any shape or contour. The surface plate 11 is mounted to the base 10 by means of the center bolt shown as 12 which, obviously, is provided with a flat head, and the bot- 2 tom of the base 10 is shown recessed to accommodate the nut shown as 13 on the center bolt 12. H Y
There is also shown a spacer washer 14 disposed between the base 10 and the surface plate 11. This spacer washer 14 provides coefficient of friction between the surface plate 11 and the base 10 when the bolt 12 is fastened and when the surface plate 11 is revolved on the base 10,
There is a recess shown as 15 on the forward end of the base 10 which is arranged to accommodate the C clamp shown as 16 and which is shown in Figure 1, attached to the base 10 by means of a chain shown as 17 or by any other method, so that the C clamp 16 is readily accessible for the operator when the device is to be used.
The work bench is shown as 18 in Figure 2, and may be of any shape or design to support the entire assembled device when the work is being done.
The surface plate 11 has an elongated slot 19 extending therethrough. This slot 19 supports a bolt 20 which is equipped with a washer 21 at its top and a wing nut 22 is threadedly engaging the bolt 20. Obviously, the slot 19 is off-center and is oppositely disposed from a work support shown as 23 which is elongated in lateral relation to the base 10. This work support 23 has an inwardly projecting beveled edge 24 which wedges and supports the work piece or sheet of linoleum shown as 25. The work support 23 is also provided with bolts shown as 26 and 26 having wing nuts 27 and 27 at the top and having heads 28 engaging a pair of slots shown as 29 and 29' in Figure 3 to permit adjustment of the work support 23 on the surface of the plate 11.
In operation, the base 10 is clamped to the surface of the work bench 18 by means of the C clamp shown as 16. This rigidly supports the entire assembled device and holds it in position while it is being worked on.
A sheet of linoleum shown as 25 is then placed onto the surface of the surface plate 11, is held in alignment by means of the work support 23 and is clamped into position by means of the washer 21 held by means of the bolt 20 which slidably moves within the slot 19 extending through the surface plate 11. In this manner, the work piece or linoleum 25 can be securely held in position while the operator does the carving on the surface of the work piece and it is possible for him to revolve the surface plate 11 with one hand while he is manipulating the carving tool with the other hand and always in a position whereby he can push his tool away from him rather than toward him to eliminate any hazard that might be encountered due to the sharp tip of the carving tool.
It is also possible for him to revolve the table or surface plate 11 while he is doing the carving when there are lines to be made of radial contour, or of uneven contour thereby making it easier for him to carve the design sketched onto the work piece on linoleum.
In the chosen embodiments of my invention, there are many features not heretofore disclosed in the prior art, and although I have shown a particular arrangement of the component parts constituting the device, I am fully cognizant of the fact that many changes in the form and configuration of these component parts may be made without aifecting their operative'ness and without affecting the spirit of my invention or the scope of the appended claim.
Having thus described my invention, what I claim and desire to secure by Letters Patent in the United States is:
A device of the character described comprising a base, a flat surface plate rotatably mounted on the upper face of said base, said base having an area greater than said surface plate, said surface plate being providedwith a pair of spaced elongated parallel slots positioned inwardly of one edge of said surface plate, a work support,
, 3 clamping means extending through said work support and said slots, said work support extending upwardly be yond the face of said surface plate, said surface plate further having a single elongated slot formed therein at arr-edge opposite said-pair of' parallel slots and positioned medially between said pair of slots, and a work clampingibolt positioned and-secured in said single slot.
. References Cited the file of this patent 'UNITED STATES PATENTS' A 559,162 Brown Apr. 2's, 1896 4 4 Yarnell July 30, 1901 Sinning et al. June 22, 1909 Bartlett Nov. 23, 1915 Dugan Dec. 12, 1916 Adsit Dec. 9, 1919 Andrew June 26, 1928 Lundell May 30, 1933 FOREIGN PATENTS Great Britain Mar. 25, 1929