US1075913A - Blue-print frame. - Google Patents

Description

J. A. HIRSCHBBRG 6v J. W. HARTLIBB.

BLUE PRINT FRAME. APPLIOATION FILED 001:26, 1912.

UNITED STATES PATENT OFFICE.

JOHN A. H'IRSOHBERG AND JULIUs W. vlIMRTLIEB, oF NEW YORK, N. Y.

BLUE-PRINT FRAME.

Specification of Letters Patent.

Patented Oct. 14:, 1913.

Y '0' alt lwhom t may concern.'

Be it known that we, JOHN A. HIRsOH- BERG and J ULiUs W. HARTLIEB, citizens of the United States, and residents of the city of N ew York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Blue-Print Frame, of which the following is a full, clear, and exact description. l 4

This invention relates to appliances for making blue prints or the like, and has particular reference to a frame or holder for the drawings or tracings to be reproduced, the same comprising a main frame adapted to hold the usual glass plate and other accessories, and in connection therewith the use of clamping means in the nature of a plurality. of binding strips associated with the side and end members of the main frame and adapted to fold inwardly simultaneously adjacent the inner edge of the frame into cooperation with the said accessories.

The primary object of this invention is to l so mount said bindingl strips upon the main frame and operativel1 make them all operabiye simultaneously by a single movement of an actuating member'.

A further object `of this invention is to facilitate the .mani ulation of large frames of the character re erred to whereby a great amount of time now commonly Wasted is savedin the placing of work into or removing the same from a large frame, and the labor incident thereto is materially reduced.`

The foregoing vand other objects of this invention will be hereinafter fullyl describedl and claimed and illustrated in the drawings accompanying this specification in which' like characters of reference indicate corresponding parts in all the views, and in whichu Figure 1 is a plan view of one embodiment of the invention shown as applied to a printing framein the position it occupies whenl being manipulated; that is to say, with thev back or the side opposite the glass plate up-L ward; Fig. 2 is a transverse sectional detail substantially'on the line 2-2 of Fig. 1; and Fig. 3 is a detail of the actuator and locking means.

Referring particularly to the drawings,

we show at 10 a frame of an suitable size,

the same being provided wit an inwardly projectingl flange 11 adapted to receive and support t e usual glass plate 12 adJacent to which the work to be reproduced and thc connect them as to sensitized paper are to be secured by any suitable means including, for example, a layer of felt 13 and a flexible impervious diaphragm 14. According to the usual practice, this diaphragm is made of rubber or rubber composition, and is fitted with a nipple 15 towliich air exhausting means of any suitable nature may be applied for the purpose of withdrawing the air from between the same and the glass plate,y whereby the ordinary atmospheric pressure operating upon the outsides of the diaphragm and the lass plate will insure the intimate contact etween the. work and the inner face of the glass plate. l

In operations as heretofore carried on with mechanism .of the nature already set forth, it is customary to employ an auxiliary fra-Ine for the purpose of securing the margin or edge of the diaphragm into substantially air-tight contact with the edge of the glass plate directly opposite the flange 11. Such auxiliar frames, however, used in connection with ilarge printing frames are exceedingly heavy and necessitate the use of overhead hoisting tackle for the purpose of lifting and shifting them preparatory to the loading of a frame or in the subsequent removal of the work therefrom. Not only is such 'an auxiliary frame heavy and unwieldy, but in order to provide reliable means to secure it in place for the purpose set forth, the means heretofore proposed have been very slow and otherwise unsatisfactory. We, therefore, employ a series of binding strips 16 on the sides and ends of the main frame which take the place of the heretofore proposed auxiliary frame. Each of these strips is independent of all the others with respect, to its construction, but we employ nieans for supporting and operating said strips ,whereby they will all move simultaneously'into locking position, and accordingly a single locking means may be employed to secure them in such position in any convenient manner.

As a pract-'cal embodiment of suitable means for operating the several binding 4strips, we provide as man rock shafts 17.

Each strip 16 is rigidly sesuitable number of arms Q0 connected by l the part of a single operator without the means of set screws or the like 21 to the shaft, whereby upon rotation of the rocky shaft the strip connected thereto will be positively moved through the arc of a circle into or out of closed position. The cap 19 is cut away as indicated at 19 for the accommodation of the arms 2O as they swing outwardly.

As suitable means for connecting the rock shafts for simultaneous operation, we provide between each two of them a pair of niiter gears 22, said gears being rigidly connected to the shafts. One of the shafts is extended, as indicated at 17', so as to project beyond the main frame, and to it is connected an actuator shown in the form of a lever 23 whereby the shaft to which it is connected may be operated in either direction and hence the corresponding operation of all of the. shafts will result. A ratchet 24 is shown secured to the shaft extension 17 and is adapted to be locked by means of a spring actuated pawl 25 so as to lock the binding strips 16 in cont-act with the diaphragm.

When it is desirable, each of the strips 16 may be faced on the side adjacent the diaphragm with a pad 26 of felt or other suitable material, whereby a more satisfactorycoperation with the diaphragm may be had and damage to the diaphragm will be prevented.

The operation of the device may be briefly set forth as follows: With the frame in the position indicated in Fig. 1, in order to open the same for the reception or removal of the work, the actuator 23 is grasped so as to permit the pawl 25 to be thrown out-v wardly ont of engagement and the actuator is then swung through an'arc of substantially 90 degrees, causing the rock shafts ,and strips 1G to swing upwardly and around the axes of the rock shafts so that they will substantially occupy the position indicated in Fig. 2. In this position the binding strips will be well out. of the way of the diaphragm 14 and the other accessories cooperating with the glass plate. `When the parts are properly placed upon the glass plate and it is desired to lock the diaphragm 1n place for the purpose above set forth, a reverse movement of the actuator 23 will cause all of the binding strips 16 to swing into normal position where they will be locked by operation of the pawl and ratchet. It will thus appear that the operation is not only a very simple one, but the locking effect is thoroughly reliable. lit is to be noted also in this connection that it is a physically easy matter to manipulate this appliance on use of any auxiliary hoisting apparatus.

The several parts of this device may be made of any suitable materials and the relative sizes and proportions and also the number of attaching arms may be varied according to the work to be performed o-r the desire of the user without departing from the spirit of the invention.

Having thus described our invention, we claim as new and desire to secure by Letters Patentz 1. The herein described blue print frame comprising, in combination with a main frame and the usual printing accessories, a plurality of binding strips associated wit-h the respective sides and ends of the frame, and means to simultaneously swing said strips through arcs of circles into or out of contact with said accessories.

2. ln a blue print frame, the combination with a main frame having a flange and the usualvpriiiting accessories supported upon said flange, of a series of independently constructed binding strips associated with the respective side and end members of the main frame and adapted to coperate with said accessories, a rock shaft jonrnaled upon each frame member, means connecting each binding strip to the adjacent rock shaft7 and means connecting the several rock shafts for simultaneous movement, substantially as set fort-h.

3. In a blue print frame, the combination with a main frame having side and end members and means associated therewith for supporting work, of a plurality of independently constructed binding strips associated with the respective side and end members and operative normally adjacent the inner edges thereof, a rock shaft journaled within each of the main frame members, arms rigidly secured to each binding strip and also secured to the adjacent rock shaft.

the frame members being provided with eiltouts to accommodate said arms, means connecting all of the shafts-for simultaneous operation whereby the binding strips will be swung` into or out of engagement with the work holding means, said' shaft connecting means including beveled gears, and means to lock the binding strips in firm contact with the work.

l'n testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.V`

JHN A. HIRSCHBERG. j llllLllUS W'. Hllt'lLlllEl. `\Vi/'itnesses:

Gino. L. Benina, Pintar D. Romaans.

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