US2775061A

US2775061A - Blue print holder

Info

Publication number: US2775061A
Application number: US387293A
Authority: US
Inventors: Dale L Wahlstrom
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-10-20
Filing date: 1953-10-20
Publication date: 1956-12-25
Anticipated expiration: 1973-12-25

Description

Dec. 25, 1956 D. WAHLSTROM 25775 061 BLUE PRINT HOLDER Filed Oct. 20; 1953 2 Sheets-Sheet k //\/z/5/\/ TUE DALE. L. WAHLSTR Dec. 25, 1956 D. L. WAHLSTROM BLUE PRINT HOLDER 2 Shoots-Sheet 2 Filed Oct. 20. 1953 ll/f f DALE L WAHLSTROM flTTUF/VES United States Patent BLUE PRINT HOLDER Dale L. Wahlstrom, Astoria, Oreg.

Application October 20, 1953, Serial No. 387,293

1 Claim. (Cl. 45-131) This invention relates generally to the making and reading of drawings in the drafting room, studio, the shop, or in the field, and particularly to a holder especially adapted for handling large plans, prints or papers.

The main object of this invention is to provide a holder on which may be mounted paper in roll form in a manner that it may be easily inserted or removed and, when mounted on the board, any portion of the paper may be made easily accessible.

The second object is to provide a protection for the drawing against moisture and dirt, leaving only the portion in use exposed, or making it possible to move the entire drawing or paper within the protection of the device.

The third object is to so simplify the construction and use of the device, as well as keep its weight and cost to a minimum that it may be within reach of the average drawing room.

I accomplish these and other objects in the manner set forth in the following specification as illustrated in the accompanying drawings, in which- Fig. l is a plan view with parts broken away and in section.

Fig. 2 is an end elevation of Fig. 1 but at a larger scale.

Fig. 3 is a section taken along the line 33 in Fig. 1.

Fig. 4 is a section taken along the line 44 in Fig. 1.

Fig. 5 is a section taken along the line 55 in Fig. 2.

Fig. 6 is a section taken along the line 66 in Fig. 5.

Fig. 7 is a perspective view of one cap used on the operating end of the device. The other end cap is the same except for the center hole, which is smaller. I

Fig. 8 is a perspecttive view of an alternate form in which the cylinders may be secured, as shown, to a board or table top or workbench top.

Like numbers of reference refer to the same or similar parts throughout the several views.

Referring in detail to the drawings, there is shown a flat drawing surface 10 having flanged edges 11, which serve to stiffen the member 10 and form a side guide for paper or instruments.

The member 10 is made of metal and terminated at each end in a tubular casing 12, which is tangent to the surface 10 at one point and spaced therefrom at the turned edge 13 to form a paper slot 14.

On one end of each tubular member 12 is a cap 15 having a hole 16 formed in the center for the pin 17 of a wooden roller 18. The cap 15 has a beaded flange 19, which fits over a bead in the tube 12.

On the opposite end of the tube 12 is mounted a cap 20 similar to the cap 15, except that it has a larger central opening 21, which acts as a journal for the hub 22 formed on the metal disk 23, which is perforated to receive the reduced end 24 of the roller 18. A light spring washer 25 is placed against the cap 20 and a roll turning wheel 26 is placed on the outer side of the washer 25. Screws 27 pass through the wheel 26, and the washer 25 into the roller 18.

A pin handle 28 disposed on the wheel 26 makes it convenient to turn the Wooden roller 18 by hand. On each roller 18 are a plurality of sponge rubber roll-s 29, which are secured to the rollers 18 and are large enough in diameter to provide frictional engagement with the interior of the paper roll 30.

Both of the caps 15 and 20 are provided with cutouts 31 in the flanges 19 to provide clearance for the edges 32 of the paper 33 from the roll 30.

In the modification shown in Fig. 8, is shown the drawing enclosing tube 34 mounted on a drawing board 35, or

table top, by means of fastening screws 36 which pass through a lip 37, which corresponds with the tangent portion of the member 10 on the first described formof the device.

In Fig. 3 is shown a cross section of the board or drawing surface 10. It will be seen that the edge 11 is turned up, whereas the edge 11-A is turned under the member 10, while the bead 11-B serves both as a guide and as a stiffener for the member 10.

The operation of the device is as follows: The ends of the two tubes 18 are removed and the roll of paper 30 is inserted with part of the roll in each cylinder. The ends 19,Which carry the turning handles 26, are then re-insorted into the ends of the tubes 18. The sponge rubber rolls 29 mounted on the rolls 18 establish friction between the print and the roller, which permits rolling the paper in either direction. The device may be operated by sliding the paper by frictional engagement with the hands without the use of the wheel 26.

I claim:

A portable holder for rolled blue prints and the like comprising a stiff, flat sheet of material having upwardly rolled end portions forming cylindrical paper roll holders at opposite ends of said sheet, said rolled end portions being tangent to that flat portion of the sheet therebetween so that said fiat and rolled portions will rest flat against a fiat supporting surface, an upstanding flange along one edge of the flat portion of said sheet and a bead along the opposite edge to stiffen said flat portion between said rolled end portions, the ends of said sheet being downturned in said roller portions and defining paper slots for said roll holders adjacent the lines of tangency, flanged end caps frictionally engaged on said cylindrical holders having slots in registry with said paper slots, bearing means in said end caps, paper rollers rotatably mounted in said bearing means, and a plurality of sponge rubber discs on said rollers adapted to frictionally engage the end of a sheet of paper inserted in one of said paper slots and wind the paper around said discs and roller when the roller is turned.

References Cited in the file of this patent UNITED STATES PATENTS 1,001,402 Hindle Aug. 22, 1911 1,143,901 Grand June 22, 1915 1,177,127 Miller Mar. 28, 1916 1,284,828 Walby Nov. 12, 1918 1,934,952 Shoemaker Nov. 14, 1933 1,952,775 Quinlan Mar. 27, 1934 1,954,449 Klee Apr. 10, 1934 2,170,133 Eitzen Aug. 22, 1939 2,174,660 Hirsch Oct. 3, 1939 2,258,525 Vigurs Oct. 7, 1941 2,652,657 Joy Sept. 22, 1953 I