US2537306A

US2537306A - Silk screen stencil frame

Info

Publication number: US2537306A
Application number: US43559A
Authority: US
Inventors: Pasquale Michael De
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-08-11
Filing date: 1948-08-11
Publication date: 1951-01-09
Anticipated expiration: 1968-01-09

Description

Jan. 9, 1951 05 {PASQUALE 2,537,306

SILK SCREEN STENCIL FRAME Filed Aug. 11, 1948 I I -INVENTOR. Q/mcha/el 00 Wank BY 7 ATTORNEYS Patented Jan. 9, 1951' SILK SCREEN STENCIL FRAME Michael De Pasquale, Brooklyn, N. Y., assignor of one-haif to Bernard Kushner, Great Neck, N. Y.

ApplicationAllgust 11, 1948, Serial No. 43,559

This invention relates to screen stencil frames and, more especially, to frames for silk screens and the like, such as are employed in making printed designs and decorations on lamp shades, piece goods, and a great variety of other articles.

A primary object of the present inyention is the provision of a frame or mounting for stencil screens which greatly facilitates attachment and tensioning of the screen and which prevents wrinkling and puckering of the screen by eliminating the possibilit of warping of the frame, This object is achieved by providing a channelshaped metal frame, preferably rectangular in shape, having inserts of wood or other suitable material received within and frictionall retained by the channels defined by said frame. The screen is attached to the frame by forming marginal, U-shaped bights around its edges and securing the free ends of the bights to the wood in serts by means of staplesor in any other suitable manner, the remaining portion of the bights extending around the side and bottom of the channel-shaped metal frame. The disposition of the Wooden inserts within the metal frame prevents warping and consequently eliminates wrinkling and buckling of the screen. The presence of the marginal, U-shaped bights in the screen minimiz'es sagging and facilitates tensioning of the screen.

Another object of the invention is the provision of a frame of the character indicated which allows detachment and convenient storage of the screen without injury. By thepractice of the invention a large number of screens may be handled and stored in a minimum of space without deleterious effect and without requiring detachment of each screen from its supporting frame, the entire unit being mountable upon and readily dismountable from a mainframe support.

The foregoing objects as well as additional objects and advantages of the invention will be readily apparent in the course of the following detailed description taken in connection with the accompanying drawing which illustrates preferred embodiments, and wherein:

Fig. 1 is a sectional View taken on line l-i of Fig. 2 showing a screen mounted on a frame embodying the features of the invention, the screen and frame sub-unit being secured to a main supporting frame;

. Fig. 2 is a top plan view of the assembly of Fi 1;

Fig. 3 is an enlarged sectional detail illustrating the construction of the channel-shaped frame member and insert and the manner of attachment of the stencil screen; and

6 Claims. (Cl. 101127.1)

Fig. 4 is a view similar to Fig. 3 illustrating a modified'form' of frame member and insert.'

Referring now to the drawing in greater de' tail, [9 designates a channel-shaped metal frame member which is preferably rectangular in shape having sides H and ends l2. fiberboard or any other suitable material are received within the sides II and ends l2 of frame it and serve as a supporting means for the screen stencil Hi. Screen 14 is attached to frame IE) by forming marginal, U-shaped bights therein and by extending said bights around the sides 'H and ends 12 of the frame, the free ends [5 of said bights being secured to the inserts it by means of staples it or in any other suitable manner. By providing the screen I4 with marginal, U- shaped bights proper tensioning of the screen is assured while minimizing any tendency of the screen to sag or distort. If desired,the upper edges of channel-shaped frame If! may be turned inwardly to provide lips I? securely retaining inserts i3.

The drawings illustrate the frame Iii, carrying the screen it secured as a sub-unit to a main frame or support l8 which may be made of wood or metal and which is preferably of considerably greater depth than frame 10. If the sub-unit wereto' be permanently fixed to main frame 18 the large bulk of the assembly would require'exces's'ive storage space. Therefore frame lfi carrying screen I l is detachably mounted on main frame l8 by means of bolts [9 or any other suitable fastening means. Where bolts are employed the frame Iii is provided with suitably disposed apertures and the inserts it are provided with countersunk'recesses' 20 to prevent projection of bolts 19 beyond the bottom surface of frame I6. As shown in Figs. 1 and 2, nuts 2! may be employed for fastening said bolts in position and clamping the sub-unit comprising frame Iii and screen Hito the main frame It.

In order to prevent the accumulation of ink between main frame l8 and channel frame 10, a sealing gasket 22 of rubber or other suitable material is interposed between said frames. This is of particular importance where multicolor impressions are to be made using a pluralit of screens l4 secured in turn to the main frame l8. The presence of gasket 22 prevents ink from lodging between the main frame and the screen supporting frame.

Fig. 4 illustrates a modified form of stencil frame 25 which is channel-shaped and which has its bottom surface formed as a downwardly opening recess or channel 26. This formation serves not alone to strengthen the frame appreciably Inserts 13 of wood,

but simultaneously serves to provide countersinking for the fastening bolts 27 which secure the stencil frame to the main frame IS. The inserts 28 are of course correspondingly shaped to fit within the sides and ends of frame 25 and the top edges of said frame are preferably inwardly turned to provide lips 29 serving to securely retain said inserts.

The construction and arrangement of the present invention provides a mounting frame to which a stencil screen may be readily attached and upon which it may be easily tensioned to form a sub-unit which may be detachably secured to a main supporting frame. The disposition .of the inserts IE or 28 within the

rigid metal frame

10 or 25 respectively prevents warping of the inserts and consequently eliminates wrinkling and dis tortion of the stencil screen I4. Thefeature of detachability of the sub-unit, comprising the mounting frame and stencil screen, from the main frame allows individual stencil screens be conveniently stored in small compass thereby conserving storage space.

Since certain modifications may be made in the device of the invention without departing from the scope thereof, it is intended that all matter contained in the foregoing description and shown in the accompanying drawing ,be interpreted merely as illustrative and not in a limiti-ng sense.

What is claimed is:

1. A stencil-screen printing device comprising a main frame and a mounting frame, said mounting frame comprising an outer, channel-shaped, rigid member and relatively yieldabie insert members retained within said outer member. said mounting frame having a stencil screen stretched across the lower surface thereof, the ends of said stencil screen extending around the outer side and top of said frame and being fixedly secured to said insert members, said main frame and mounting frame having cooperating means for removably fastening said mounting frame to the bottom of said main frame in regis tering position therewith.

2. A stencil-screen printing device comprising a main frame and a mounting frame having the same plansize, and shape as said main frame, said mounting frame comprising an outer, channel-shaped, rigid member which is open at the top thereof, and relatively yieldable insert members retained within said outer member, said mounting frame having a stencil screen stretched across the lower surface thereof, the ends of said stencil screen extending around the outer sides and top of said frame to provide marginal 'U- shaped bights and being fixedly secured to said insert members, said main frame and mounting frame having cooperating means for removably fastening said mounting frame flat against the bottom of said main frame in registering position therewith.

3. A stencil screen printing device according to claim 2 in which the top edges of the channel- :shaped member are inwardly turned to provide lips preventing removal of the insert members.

i. A stencil-screen printing device comprising a main frame and a mounting frame having the same planlsize and shape as said main frame, said mounting frame comprising an outer, channel-shaped rigid member which is open at the top thereof, and relatively yieldable insert memibers retained within said outer member, said mounting frame having a stencil screen stretched across the lower surface thereof, the ends of said stencil screen extending around the outer sides and top of said frame to define marginal U- shaped big-hts and being fixedly secured to said insert members, said main frame being secured to said mounting frame by a plurality of bolts each of which extends through said main frame and said mounting frame, the ends of said bolts being countersunk in the' bottom of said mount ing frame.

5. A stencil-screen printing device according to claim 4 in which the bottom surfaces of said mounting frame are provided with central Iongitudina-l channels in which theends of said bolts are countersunk;

6. A stencil-screen printing device according to claim 4 in which a gasket member is interposed between said mounting frame and said main frame, said gasket member being rigidly held in position by the clamping" force of said bolts.

MICHAEL DE PASQUALE.

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

UNITED STATES PATENTS Number Name Date '1,489,439 Banzett Jan. 8, 1924' 1,495,037 Patterson May 20, 1-924 1,828,771 FIoc-khart Oct. '27, 1-931 FOREIGN PATENTS Number Country Date 14,397 Australia July 12, 1923 349,411 Italy -f July 15, 1937