US2298587A

US2298587A - Cassette

Info

Publication number: US2298587A
Application number: US419259A
Authority: US
Inventors: Halsey L Raffman
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-11-15
Filing date: 1941-11-15
Publication date: 1942-10-13
Anticipated expiration: 1959-10-13

Description

Oct. 13, 1942. H. L. RAFFMAN CASSETTE Filed Nov. 15, 1941 2 Sheets-Sheet l ill Patented Oct. 13, 1942 UNH" STATES FFICE 5 Claims.

This invention relates to cassettes.

An object of this invention is to provide a strong, compact and durable cassette, which shall be relatively inexpensive to manufacture, easy to assemble, and in which the composition plate may be readily replaced, and which shall be relatively easy to manipulate, and yet practical and ecient to a high degree in use.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements, and arrangement of parts which will be exemplied in the construction hereinafter described, and of which the scope of application will be indicated in the following claims.

In the accompanying drawings, in which is shown one of the various possible illustrative embodiments of this invention,

Fig. 1 is a top plan view of a cassette embodying the invention, with parts broken away and in cross-section;

Fig. 2 is a cross-sectional View taken on line 2 2 of Fig. 1;

Fig. 3 is a cross-sectional view taken on line Fig. 4 is a crossnsectional view taken on line lI-l of Fig. 1;

Fig. 5 is an enlarged, crosssectional view taken on line 5-5 of Fig. 1;

Fig. 6 is an enlarged, detailed view similar to one end of Fig. 3; and

Fig. 7 is a partial, top plan view of the cassette with the clamping cover plate opened up, and with parts broken away and in cross-section.

Referring now in detail to the drawings, designates a cassette embodying the invention. The same comprises a rectangular frame il supporting a composition plate I2, and provided with a cover I3, adapted to be clamped to the frame to press negatives Id against the composition plate.

The frame I I is constructed of generally tubular sheet metal. Said frame has a front end Il, a rear end It, and parallel side portions I9.

Each of the front, rear outer vertical wall it, 2i extending inwardly the wall portions and top horizontal wall porand side portions has an and a horizontal flange tions 22 extending inwardly from the upper ends of said vertical wall portions 2d.

It will be noted that the fianges 2i extend inwardly beyond the top walls 22, the composition plate I2 resting on the inner portions of flanges 2l, as clearly illustrated in the drawings. EX-

from the lower ends of tending downwardly from the top walls 22 are vertical walls 2A, the lower edges of which contact the flanges ZI.

It will now be understood that the frame II comprises hollow tubular construction at the top, bottom and ends, with an inwardly extending ange to be engaged by the edges oi the composition plate I2.

Means is provided to retain the composition plate I2 in flanges EI. To this end, there is attached to the vertical walls 2li of the bottom and top portions Il and it, straight bars 3S and 3|. Baril is attached to the iront portion I'I by screws 39a, and bar 3l is attached to the portion I8 by screws Sia.

It will be noted that the bars 3%, SI are of rectangular cross-section, and are spaced above the flanges 2l a distance substantially equal to the composition plate I2. Furthermore the bars 3Q, 31 terminate short of the side portions I9 of the frame II.

The ends of the wall portions 2li, at the top and bottom of the frame are formed with openings 33 and Sii, respectively. Attached to the inner surfaces of the vertical wall portions 2d at the sides I of the frame, are bars 35 attached to said wall portions Zby screws 35a. The ends of bars V35 project through the openings 33 and 3g?, respectively, thereby affording rigidity to the frame construction. The ends oi bars 3S contact the bars 35. The bars 35 are likewise of rectangular cross-section, and spaced above flanges 2l by a distance equivalent to the thickness of the composition plate, I2.

Composition plate is removable and replaceable by unscrewing screws 39a. and 3io to permit removal of bars 30, SI and by then removing screws 35a to permit bars 35 to be shifted endwise and then removed from the frame.

The clamping cover I3 comprises a cover plate di?, preferably smooth on its under-surface. The upper surface of cover plate i0 may be corrugated, as shown in the drawings. Attached to the under-suriace of cover plate Lit, is a pad or sheet el of felt and lead, or any other soit material, preferably folded around the edges of the cover plate, as at 42. Plate di) is formed with two pairs of horizontally aligned projections or raised portions (i3, for the purpose hereinafter appearing. The cover plate 40 is of such size as to fit within the bars 3Q, 5I, 35 and it is adapted to press the negatives HI against the composition plate.

Means is provided to hinge the cover plate 40 to the frame. To this end, there is fixed to the upper end of said cover plate, a pair of hinged plates 45 having upwardly, offset portions 46 extending beyond the cover plate, said portions 46 being formed with ears 41, for the purpose hereinafter appearing.

The top wall 22 of top portion I8 of the frame is cut-away, as at 48, to admit portions 46 of the hinge plate 45. Wall 24 of frame portion I8 is likewise cut-away as at 49, to admit offset portions 46 of the hinge plate 45. Wall 24 of the rear portion I8 is further cut-away, as at 50, below the cut-away portions 49, sufliciently to admit the ears 41. The cut-away portions 50 are further covered by the bar 3I fixed to frame portion I8. Fixed to said bar 3| are a pair of rearwardly extending horizontal pins 53.

It will now be understood that upon removal of bar 3I, portions 36, 41 of the hinges 45 may be inserted through the cut-out portions 50. The

ears 41 are then raised to engage the wall 24 on opposite sides of cut-out 49. Bar 3I may then be attached in place so that the hinges cannot be removed from tubular portion I8. Pins 53 contact the outer edges of the hinge plates as the cover is swung upwardly.

It will now be understood that the hinge provides for up and down movement of the cover plate to accommodate different thicknesses inserted between the cover plate and the composition plate I2.

Means is provided to clamp the cover plate to the frame. To this end, there is attached to the cover plate a pair of upwardly extending rivet pins 66. Pivcted on each pin 60 is a spring clamp 6I, each having a pair of outwardly extending arms 62. The walls 24 of side portions I9 of the frame are formed with longitudinal slots 64 to receive the outer ends of arm 62. The slots 64 on one portion I9 are offset with respect to said slots in the other portion I9, so that clamping member 6I may be rotated in one direction only, to clamp the cover plate, and in an opposite direction only, to release the cover plate.

It will be noted that the arms 62 engage the raised portions or projections 43 on the cover plate to press the outer ends of said arms against the upper edges formed by the slot 64 to clamp the cover plate to the frame. The arms 62 may be formed with recesses 68 adjacent their outer ends to receive the lingers of the operator to facilitate swinging of the clamp 6I. The cover plate furthermore may be provided with a hinged loop 10 to facilitate lifting of the cover plate after it is released.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved, and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiment above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

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

l. A cassette comprising a frame having at one end, an outer vertical wall, a horizontal top wall, and an inner vertical wall, said to-p wall having a cut-away portion, said inner vertical wall being cut-away adjacent its upper end to an extent equivalent to the cut-away at the top wall, and being cut-away adjacent its bottom end on opposite sides of the cut-away at its upper end, a bar iixed Sil to said inner vertical wall and covering the Wider cut-away portion of said inner vertical wall, a cover for said cassette, and a hinged plate xed to said cover and extending therebeyond, and formed with recesses, said hinge plate passing through the cut-away portion at the upper end of the inner vertical wall.

2. A cassette comprising a frame having at one end, an outer vertical wall, a horizontal top wall, and an inner vertical wall, said top wall having a cut-away portion, said inner vertical wall being cut-away adjacent its upper end to an extent equivalent to the cut-away at the top wall, and being cut-away adjacent its bottom end on opposite sides of the cut-away at its upper end, a bar Iixed to said inner vertical wall and covering the wider cut-away portion of said inner vertical wall, a cover for said cassette, a hinge plate fixed to said cover, and extending therebeyond, and formed with recesses, said hinge plate passing through the cut-away portion at the upper end of the inner vertical wall, and means on said bar extending toward the outer vertical wall adapted to contact the outer end of said hinge plate.

3. A cassette comprising a frame having at one end, an outer vertical wall, a horizontal top wall, and an inner vertical wall, said top wall having a cut-away portion, said inner vertical wall being cut-away adjacent its upper end to an extent equivalent to the cut-away at the top wall, and being cut-away adjacent its bottom end on opposite sides of the cut-away at its upper end, a bar xed to said inner vertical wall and covering the wider cut-away portion of said inner vertical wall, a cover for said cassette, a hinge plate xed to said cover, and extending therebeyond, and formed with recesses, said hinge plate passing through the cut-away portion at the upper end of the inner vertical wall, and means on said bar extending toward the outer vertical wall adapted to contact the outer end of said hinge plate, said frame having side portions likewise formed with outer vertical walls, horizontal top walls and vertical inner walls, the vertical inner walls of the 1 side portions of the frame being formed With longitudinal slots, and spring clamps pivoted to said cover plate, and having outwardly extending arms adapted to be received within said longitudinal slots.

4. A cassette comprising a frame having at one end, an outer vertical wall, a horizontal top wall, and an inner vertical wall, said top wall having a cut-away portion, said inner vertical wall being cut-away adjacent its upper end to an extent equivalent to the cut-away at the top wall, and being cut-away adjacent its bottom end on opposite sides of the cut-away at its upper end, a bar iixed to said inner vertical wall and covering the wider cut-away portion of said inner vertical wall, a cover for said cassette, a hinge plate iixed to said cover, and extending therebeyond, and formed with recesses, said hinge plate passing through the cut-away portion at the upper end of the inner vertical wall, means on said bar extending toward the outer vertical wall adapted to contact the outer end of said hinge plate, said frame having side portions likewise formed with outer vertical walls, horizontal top walls and vertical inner walls, the vertical inner walls of the side portions of the frame being formed with longitudinal slots, and spring clamps pivoted to said cover plate, and having outwardly extending arms adapted to be received within said longitudinal slots, said cover plate having upwardly extending projections adapted to engage said spring arms, when the spring arms are moved into said longitudinal slots.

5. A cassette comprising a frame having top, bottom and side portions, each of said portions comprising outer vertical walls, horizontal, inwardly extending top walls, and downwardly extending, inner vertical walls, and inwardly extending, horizontal flanges extending inwardly beyond said inner vertical walls, a composition plate mounted on said flanges, a pair of bars fixed to the inner vertical walls of the top and bottom portions of said frame, said inner vertical walls of the top and bottom portions of the frame being formed with openings at their outer ends, and a pair of bars fixed to the inner vertical walls of the side portions of the frame and having the ends thereof received within the openings of the inner vertical walls at the top and bottom of the frame, the bar xed to the inner vertical wall of the top portion of the frame, being provided with a pair of horizontal pins extending toward the outer vertical wall of said top portion of the frame, a cover plate, hinge members xed to said cover plate, the inner vertical wall at the top portion of the frame being formed with cut-outs widened at their lower ends, and said hinge members having ears adapted to pass through the widened portions of the cutouts, and the bar which is xed to the inner vertical wall of the top portion of the frame, being adapted to cover the widened portions of said cut-out.

HALSEY L. RAFFMAN.