US2438225A - Cover and receptacle for dry printing machines - Google Patents

Description

March 23, 1948. w MARTIN 2,438,225

COVER AND RECEPTACLE FOR DRY PRINTING MACHINES Filed March 14, 1945 2 Sheets-Sheet l INVENTOR. W/LL/BAL D MART/N ATTORNEYS W. MARTIN March 23, 1948.

COVER AND RECEPTACLE FOR DRY PRINTING MACHINES Filed March 14, 1945 2 Sheets Sheet 2 INVENTOR. WILL/BALD MART/N d7 Aii/PNEVE Patented Mar. 23, 1948 COVER AND RECEP'IACLE FOR DRY PRINTING MACHINES Willibald Martin, Binghamton, N. Y., assignor to General Aniline & Film Corporation, New York, N. Y., a corporation of Delaware Application March 14, 1945, Serial No. 582,696

3 Claims. 1

This application pertains to an invention in dry printing machines, such as Ozalid machines for making reproductions of drawings, printed matter, etc., and more especially, to a cover for enclosing and protecting the sensitized material employed on such machines. The cover also has the function of receiving or holding large drawings or other originals to be printed.

The invention has for one of its objects the provision of a cover which is adapted to protect rolls of sensitized material supported at the front or other part of such a machine so that said sensitized material shall not be subjected to direct rays of sunlight or to light from other sources. It is a further object of the invention to so construct such a cover that it shall have the additional function of supporting large rolls or sheets of drawings or tracings, or other originals to be printed. A further object of the invention is that of so devising the combined cover and receptacle that when in a position to protect the sensitized material against direct light or from other damage, that it shall not interfere with drawing the sensitized material from the supply rolls and shall not make it necessaiy to take other than the usual steps to introduce or feed that paper across the feed board of the machine. Other objects will become apparent as the mechanism is described in greater detail.

The invention is herein described as applied to one of the larger types of dry printing machines, although it is to be understood that it is applicable to all such machines, no matter what their sizes, and in fact, it is applicable to all machines of this general description though the specific illustrations and description pertain to one only of them. Normally the sensitized paper and the original to be printed are fed across a feed board at the front of the machine and a roll or rolls of the sensitized material are mounted at the front of the machine below the feed board. In the machine herein illustrated, there is provision for two such rolls of sensitized material, but it is to be understood that the invention applies to constructions in which there may be only one roll or more than one. While diazo-type coated paper is not very sensitive to ordinary sources of light, especially the ordinary tungsten lighting to be found in most industrial plants, the rolls of sen sitized material are sometimes in position on these machines for a considerable period of time in which very little of the material is printed, for example, when the machine is tobe employed for making reproductions of smaller sizes for which cut sheets are employed. If the machine 2 is located so that direct sunlight strikes the rolls or if it is in position near artificial light having a greater percent of violet or ultra-violet than normal, then it may become more essential, or at least, more desirable, to protect the printing material.

When printing larger tracings or other originals, considerable difiiculty may be experienced in handling them, even though they are introduced to the machine after being rolled. Since the operator of the machine has to guide both the sensitized paper and the original to be printed into the machine, the original may be released in which event it will unroll and, if long enough, part of it may reach the floor to be stepped on or possibly to become otherwise damaged. The cover may be lowered to a position as will hereinafter be described in which it serves as a receptacle or tray for such rolls of original material. At that time it does not serve as a cover for the light sensitive paper, but the paper is continuously being fed into the machine and no part of the same is exposed to the light for a period of time long enough to aiiect it in any undesirable manner. If desired, a number of tracings may be rolled and held in the receptacle whereupon each may be printed in the order desired. Y

As will be described in greater detail, the combined cover and receptacle is adapted to be easily and efiectively moved from one position to the other and is locked in one of its positions while it is maintained in the other by gravity. It may be very easily released and moved from one position to the other. The invention will now be described in detail by reference to the accompanying figures of drawing in which:

Fig. l is a front elevation of part of a machine to which the invention has been applied.

Fig. 2 is a side elevation, certain parts being broken away, wherein the combined cover and receptacle is shown in each of the positions which it may occupy.

Fig. 3 is a detail of the cover and receptacle as seen from one end.

Fig. 4 is a section taken at the line 44, Fig. 2.

Now referring to Figs. 1 and 2, the front portion of a dry printing machine or" the type to which the invention may be applied is generally indicated by numeral iii. For a more complete description of such a machine, reference is made to U. S. Patent 2,308,130. The originals to be printed and the sensitized paper are fed into the machine across a feed board H which is located at the front of the machine and at a convenient 3 height. Below this feed board and at either side are the projecting plates I2 and I3 between which are supported rolls of sensitized material, one of which is supported on the spindle or shaft i t and the other of which is carried by shaft I5, although only one such roll may be mounted on some machines. The spindles I l and is are supported at their left hand ends by bearings I3 and Il which are suitably held within the plate I2. The other ends of the spindles are receivable within the bearings I3 and I9 bolted to the plate I 3. The details of these spindles and bearings have not been shown since they are not important to the invention herein described and claimed. It is surficient to say that the spindles are suitably frlctioned so as to ofier resistance against turning or other means is provided to tension the sensitized paper as it is drawn from the rolls, and that the spindles are removable from the bearings It or E9, as the case may be, for sliding a roll of paper into position. End. plates, one of which is shown at 25, are'removable from the spindles, are adjustable along them, and are secured in position by set screws or other suitable means. They are lSEd to position the rolls of material centrally or the machine and to prevent displacement of that material.

As the paper is withdrawn from one or the other of the rolls, it is passed about a guiding roller 2| at the frontof the board II. It also passes over a cutting wire which extends beneath the roller 2 Land is fixed at one end but attached to a spring 22 at the opposite end. That wire is employed for cutting any desired length of paper as it is fed into the machine, that being accomplished in. a well-known manner.

In Fig.2, the combined cover and receptacle is shown in two positions, one identified as a full line position, the other adotted line position. In the full line position, .the sensitized material is covered and; protected against light or other damaging influences. In the dotted line position, the same device becomes a;receptacle for rolls of original material as above described. This cover includes end pieces. 23 and an arcuate or other 'connecting'po'rtion 24., The connecting portion 24 is'preierably a strip of sheet material bent into proper curvature and welded or otherwise at- :tached to the end;pieces 23.v The sheet material forming the part 24 is turned-back upon itself at the top and bottom edges thereby-strengthening the structure and rounding the edge so as to prevent'damage to thepaperas it is drawn over one of those "edges, Fig.2. The length of the-sheet material forming part 24 is slightly less than the lateral space between theinner sides of plates I2 and I3. Theends 23'thus'h'avea small amount of clearance within the plates I2'and I3. Each of those endpieceshas an'elongated opening or bearing 25 a'nda notch 26. The'elongated open- Figs. 2and 4. These studs are held Within the plates I2 "and "[3. Only one is shown, that 'at {theplate I3, but it is'to beunderstood that the oppositeendpieces23 is identical with that illustrated and that a notch '26 therein'issimilarly were 4 engaged by a corresponding stud when the cover is in the full line position, Fig. 2.

When it is desired to employ the device for holding rolled tracings or other material, it is first raised slightly, then pulled outwardly and when the notches 25 have cleared the studs 28, is dropped to the position shown in dotted lines. Then it is sustained by contact of the opposite ends of the elongatedopenings 25 on flanges 2i. Handles or knobs 29 are used to grip and control the device as it is moved from one position to the other. Of course, to return it to the full line position, it is merely necessary to raise the then pushing inwardly until the notches 26 have engaged beneath studs 28.

As shown in Fig. 2, the sensitized material may be drawn from one of the rolls, about the upper edge of the cover strip 2%, then over the cutting wire and about roller 2i. As it is cut, the short end is left projecting and that end may be gripped and fed over the board II and into the machine when desired. If the lower roll of material is being used, the same applies. Thus it can be seen that the rolls of material are protected against light or other damage, yet such material is always ready to be fed to the machine whenever prints of a size requiring such larger material are to be made. In the event it becomes desirable to support large tracings or other originals, the combined cover and receptacle are quickly dropped to the lower position and serves its intended purpose in that position. The device is easily moved from one position to the other and is securely retained in upper position while it remains in the lower position due to the action of gravity upon it.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept maybe carried out in a number of ways. This application is, therefore, not to be limited to the precise details described, but is intended to cover all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. In a printing'machine of the type described, the combination of a feed table, supportingmeans 'ior a roll of sensitized printing material positioned beneath the feed table over which that material is drawn from the roll and fed, and a combined sensitized material protecting cover and receptacle for original material to be printed, comprising light shielding 'e'nd members and a connecting light shieldingmember extending from one end member to the other and along the length of 'the roll of "sensitized mat'erial, means upon which "said end members are pivoted comprising an elongated b'eariri'g'in each (and member and cooperating fixed-pivots adjacent the supporting means fo'r'the roll about which the end members and the connecting member may be swung to a position in which'the material is shielded and irom that position to one'in which the connecting member is substantially horizontal for retaining thematerialto-be "printed, and means to retain the said members in the first-mentioned position including a'riotch in one of said end meinbers'and a fixed st'op engageable within said notch when the shielding means is'raised and the en'd'members'moved init ardly tdthe'extent permitted by their elongated bearings but being disengageable therefrom upen outwammovement oi'said end nieinbers as permittedby the elongated bearings.

2.1a a pri nting inachineoi the type described,

5 the combination of a feed table, supporting means for a roll of sensitized printing material positioned beneath the feed table over which that said material may be drawn from the roll and fed, and a combined sensitized material protecting cover and receptacle for original material to be printed, comprising light shielding end members and a connecting light shielding member extending from one end member to the other and along the length of the roll of sensitized material, said connecting light shielding members having an edge which when the member is in material protecting position, reaches to a point slightly beneath the said feed table so that the sensitized material maybe threaded over that edge to be guided therebyas' it approaches the feed table, means upon which sa'id en'd'meinbers are pivoted comprising an elongatedbearingin each end member and cooperating fixed pivots adjacent the supporting means for the roll about which the end members and the connecting member may be swung to a position in which the material is shielded and from that position to one in which the connecting member is substantially horizontal for retaining the material to be printed, and means to retain the said members in the first-mentioned position including a notch in one of said end members and a fixed stop engageable within said notch when the shielding means is raised and the end members moved inwardly to go 3. In a printing machine of the type described,

the combination of a feed table, supporting means for a roll of sensitized printing material positioned beneath the feed table over which that material is drawn from the roll and fed, and a was receptacle for original material to be printed,

comprising -light shielding end members and a 10 members and the connecting member ma be swung to a, position in which the material is shielded and from that position to one in which the connecting member is substantially horizontal for retaining the material to be printed,

15 and means to retain the said members in the first-mentioned position including a cooperating Anotchanda. fixed stop member, one in one of the 1 tpivoted and members and the other carried by an adjacent fixed-portion oi the machine, said notch '20 and stop member being interengaged when the shielding means is raised and the end members moved inwardly to the extent permitted by their elongated bearings, but being disengageable, one from the other, upon outward movement of said end members as permitted by the elongated bearings.

' WILLIBALD MARTIN.

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

UNITED STATES PATENTS Number Name Date 880,345 Williams Feb. 25, 1908 910,832 De Lukacsevics Jan. 26, 1909 1,185,801 Hutton June 6, 1916 1,922,461 Sullivan Aug. 15, 1933 2,373,040 Macdonald et a1. Apr. 3, 1945 combined sensitized material protecting cover and

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