Inking-plate heater.

Abstract

Claims

1.. E. DOYLE. INKING PLATE HEATER. APPLICATIQN FILED DEC- 22. 1913- Patented Apr. 17, 1917. ,fl gif. yf Zal/52mm' f.; ZU. 517555551' W. w 557km af/ me mmm: Para: rua-rauwe.. wnsu :Nc mv. a c. nutren srarns Paritair ermee. JAMES E. DOYLE, or CLEVELAND, orrio, assiettes. or cnn-HALF To cHAaLEs-s. Barmen, or CLEVELAND, orrro. INKING-PLATE HEATER. Application led December 22, 1913. To all whom t may concern.' Be it known that I, JAMES E. DOYLE, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and useful Improvement in Inking-Plate Heaters, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions. The hereinafter described invention is especially adapted for heating inking plates such as are applicable for use upon the Gordon type of press. rIhe object is to provide 'a heater which will be sufficiently economical in construction and operation and yet satisfactorily fulfil its intended function. I am aware that the heating of inking disks such as are commonly employed has already been accomplished, witness by way of example the very recent Patent 'Na 1,079,161, issued to Bucher. The purpose in heating` any surface from which ink is to be distributed, is to permit of the use of a thicker supply than would otherwise loe feasible. It is desirable to use such a thicker supply because it is more concentrated in color and hence makes a darker and therefore clearer impression. In order to make it practical, however, to effect the continued spreading and uniform transfer of ink of this consistency it should be temporarily heated and thereby necessarily softened. A further object of my present invention is the designing of a construction which may be attached in operative proximity to though independently of the plate which it is desired to heat. When so mounted the plate may be moved with respect to it or removed and another substituted. The advantage of this is apparent in connection with multi-color work when a number of plates are substituted for a single disk. The inventive conception is embodied in means which are hereinafter explained and variously combined in the claims, while the annexed drawing and particular description thereof together set forth in detail certain means constituting my invention, the disclosed means, however, being but one of va- Speciication of Letters Patent. Patented Apr. 1?, 1917. Serial No. 808,159. rious mechanical forms in which the principle of my invention may be applied. Referring to the drawing in which like numerals of reference are employed to indilcate corresponding parts as in my co-pending application, filed October 29,1913, Serial No. 797,941. l Figure I is a side elevation of the swinging portion of a printing press of the Gordon7 type showing my invention in conjunction therewith. Fig. II is a rear elevation of Fig. I. Fig. III is a section of the heating element proper. Fig. IV is a view corresponding with a portion of Fig. I, showing the modified mode of att-aching my invention. Fig. V is a partial horizontal section on the line indicated by the arrows in Fig. IV. The supporting frame 1 is provided on both of two opposite sides with a pair of substantially horizontal flat surfaces or pads corresponding pairs being designated as 9. and 3 respectively. The frame is furthermore fashioned with forward track-forming edges which are bent obliquely upward at et. The portion of the frame 1 adjacent the track edges a are formed with right angular recesses comprising the flat surfaces which are inclined obliquely upward and the shorter transverse surfaces 6 which terminate in the surface of the tracks e. A carrier 7 is pivotally mounted to the frame at S and itself carries the two rods 9 to the extremities of which the saddles 10 are pivotally connected. These latter include the usual pair of composition rolls 11 which are intended to travel upon the track-forming edges. of the frame. A more detailed description of the carrier and saddle mechaw lnism need not be supplied since no invention is claimed as associated therewith. A support 12 of approximately inverted U-shape includes a pair of divergent extremities 13 adapted to lie seated upon the p flat surfaces Q as best seen in Fig. I. An interjacent portion 14 of the support 12 is provided at its own middle with an upwardly projecting boss 15 of circular crosssection having a bore 1G extending therethrough. p The inking disk 2O here employed is provided underneath and centrally with a boss 21 which is likewise of circular cross-section and of correspondii'ig dimension as the boss 15. A pair of brackets 24 are each formed below with the inwardly extending surface 25 which are adapted to be superimposed upon the extremities 13 of the support 12. rIhe upper ends 26 of these brackets extend rearwardly to a point beyond and above the uppermost edge of the inking disk 2O and there together support the fountain through the medium of fasteners 27 extending therethrough. Each of the brackets 24 is fashioned with another fiat under surface or pad 28 slightly elevated and to the fore with respect to the surfaces 25. The surfaces 28 are designed to simultaneously rest upon the surfaces 3 of the frame. The upper forward edges of the brackets 24 are also of rectangular construction to include surfaces 29 and 30 adapted to form a close mechanical fit with the surfaces 5 and 6 respectively as clearly seen in Fig. I. The upward extent of the surfaces 30 corresponds throughout that of the surfaces 6 whereby the elongated upper edge 31 of the brackets may lie iiush with the top surface of the edges 4 and thereby establish a smooth and very durable continuation of the tracks. The brackets 24 are screwed to the frame through the medium of cap screws 32 two of which are shown to also extend through the extremities 13 to simultaneously fix these at such points. The arrangement is necessarily such that the upper surface of the inking disk 2O normally lies in the substantially the same inclined plane as the plane of the inclined edges 31. Proceeding now to the description of my heater it will be seen to have the form of a ring designated in its entirety by the numeral 41. This ring surrounds the abutting bosses 15 and 21 and is supported upon the interjacent portion 14 near opposite ends thereof. An adjustable connection is shown to be e'ected through the medium of two angles each designated as 42. These angles are screwed to the heater 41 and likewise to the interjacent portion 14 and all of the screws are designated by the numeral 43. It should be noted from a close inspection of Fig. I that my heater is non-contiguous to the disk 20. This permits the latter to be rotated if desired, or entirely removed without disturbing the connections of the heater. The heater construction comprises two telescoping metal rings 44 and 45 each of which is of U shaped cross section. A pair of conventional electrica-l connections 46 project into the interior. These are clearly seen in Figs. I and II. The member 45 is provided with an asbestos lining serving spacer rings 50 lie upon the part 49, and are removed equal distances fro-m the lining members 47 and 48. Superimposed upon the spacer rings 50 respectively are a pair of annular insulating members 51 and 52. These extend upwardly to within a short distance ofthe top of the telescoping ring 44. A third insulating member 53 likewise composed of asbestos also rests against to surround the spacer rings. As so positioned the insulating ring 53 is snugly interposed between the annular membersil and 52 as clearly seen in Fig. 3. The arrangement is in fact such that two out-lying annular air spaces 54 and 55 and one interjacent air space 56 are provided between the outerlining and the interior insulating members 51, 52 and 53 which together form an annular compartment of like though smaller cross sectional area. Disposed in this last mentioned inner-compartment is any approved typev of resistance coil 57. This coil is operatively connected With the connections 46. Such coil is held in place by being enveloped in a customary manner by some suitable packing material. I have preferred to employ for this purpose what I term a heat conserving and intensifying composition 58 which, while it may embody patentable subject matter, need not be further explained here. An insulating outer covering 59 composed of mica is interposed between the inner surface of the interjacent portion of the telescoping ring 44, the annular members 51 and 52 and thecomposition 58. A heating element constructed in accordance with the explanation just given proves itself of very high efhciency and generally Well adapted for the particular purpose of my invention. The advantage of my heater construction to which I would call especial attention consists in concentrating the radiation of heat above, that is, in the interjacent portion of the telescoping member 44. It will be apparent from Fig. III that the radiation of heat in any one of the other three directions is made practically impossible by reason of the double walled insulation and the intervening air spaces which are in themselves a most effective insulation. It should be mentioned also in passing that a heater of circular form such as mine will heat an inking plate uniformly even when it is kept stationary. My invention being described with sufricient thoroughness, what I desire tosecure by Letters Patent and therefore claim specifically, is: 1. A heating appliance for printing presses comprising the combination of a bracket, an inking plate supported thereby, a heating member mounted and extending adjacent a major portion of the under surface of said plate, and an adjustable conneotion between for moving said member toward and away from said plate. 2. A heating appliance for printing presses comprising` the combination of a bracket, an inking plate supported thereby, a heating element interposed between said bracket and plate and means for adjusting said element relatively to each and uniformly with respect to the plane of the latter. 3. A heating appliance for printing presses comprising the combination of a bracket provided with a bearing, an inking plate provided centrally with a stud rotatable'in said bearing, and a heating element Copies of this patent may be obtained for ve cents each, by addressing the Commissioner o1? Patents, surrounding said bearing and ont of contact therewith and with said plate. 4. A heating appliance for printing presses comprising an inking plate in conibination with a looped heating member adjustably supported near the said plate whereby to control and variously distribute the heat Zone created thereby. Signed by me, this 20th day of December, 1913. JAMES E. DOYLE. Attested by- CURT B. MUELLER, MARY COLEMAN. Washington, ID. G.

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