US2411514A - Reproducing and projecting apparatus - Google Patents

Description

Nov. 26, 1946 5, BLANC 3 REPRODUCING AND PROJECTINGAPPARATUS Filed July 29, 1944 a 'She ets-Sheet 1 lnve n or I SAMUEL BLA/VC Jiiorney NW 26, 1946. I s. BLANC 2,411,514

REPRODUCING AND PROJECTING APPARATUS I Filed Ju1 '29. 1944 s Sheets-Sheet 2 fnz renfor SAMUEL Bum/c.

Nov. 26, 1946; 5

REPRODUCING AND ,PROJECTING APPARATU Filed July 29, 1944 3 Sheets-Sheet 3 631M054 amzvc -tom wall of the cabinet.

Patented Nov. 26, 1946 OFFICE REPRODUCING AND PROJECTING APPARATUS Samuel Blanc, Grantwood, N. J. Application July 29, 1944, Serial No. 547,248

6 Claims. 1

This invention relates to reproducing and projecting apparatus, and more particularly to ap-' paratus of this type which is adapted to readily obtain scaled images of drawings, prints, inaps or the like, or of various article of manufacture,"

such as machine parts.

The apparatus of this invention may be employed in drafting rooms or other locales and has a variety'of uses. For example, a scaled image of an object may be cast on a translucent panel and readily traced by'hand or: reproduced on a sensitized film or the like from which subsequent blueprints or copies may be made.

To this end my instant invention comprises a cabinet thatis openat the top, above and across which there is provided a table board having a translucent panel The table board is vertically adjustable and is tiltableon a substantially horizontal axis. The interior of the cabinet is divided into a lower or light compartment and an upper or lens compartment. An object-holder is mounted on a sliding shelf that forms the bot- The object-holder is rotatable on a'substantially vertical axis and is also tiltable on a substantially horizontal axis whereby an object, such as a drawing or an article of manufacture, may be placed thereon and arranged in any predetermined desired position.

A pair of tubular lamps are positioned in the 2 tained. Additionally, perspective or isometric drawings or reproductions ofarticles of manufacturemay readily be obtained by the practice of this invention, as will be apparent to persons skilled in the art from the detailed description that follows.

In the design and manufacture of certain items of equipment, such as in the airplane field. it is customary to first prepare small scale drawings from which actual size templates are drawn by hand. This is a laborious procedure and consumes considerable time. By the use of the apparatus of this invention, a full size image of the smallscale drawing may be projected and traced 'to obtain the template direct. If desired, this im- It is an object of this invention to provide ap-. paratus of the character indicated which is adapted to readily obtain enlarged or reduced reproductions of various articles including drawlight compartment above and to the side of the is adapted to obtain per p v other three dimensional reproductions of an article.

object-holder and are provided with suitable reflectors that are adapted to direct light rays to the object-holder. The light rays so directed to the object-holder are reflected upwardly into the lens compartment. A lens assembly is contained within the lens compartment. This assembly includes a lens plate whose plane may be arranged either horizontally or vertically. -The lens plate has a central aperture and a plurality of lenses of different focal length pivotally supported. on 40 its upper surface. The individual lenses are so constructed and arranged that only one thereof at a time registers with the aperture in the lens plate. The lens plate is adapted to be raised and lowered within its compartment by a suitable mechanism, including vertically disposed racks and pinions and an actuating means manually operable from the exterior of the cabinet.

A projector is removably mounted to a side wall of the cabinet and cooperates with the lens assembly to project an image on a substantially horizontal axis through the cabinet when the lens plate is in one predetermined position.

,By the practice of my invention exact repro- A further object of this invention is the Provision of reproducing and projecting apparatus which is relatively simple andcompact in design, sturdy in construction, and trouble-free in operation.

, Th foregoing, as well as other objects, will be readily apparent to persons skilled in the art by reference to the following detailed description and annexed drawings which respectively describe and illustrate a preferred embodiment of the invention, and wherein Figure 1 is a perspective view of one arrangement of apparatus comprising the instant invention;

Figure 2 is a vertical sectional view along line 22 of Figure 1;

Figure 3 is a vertical sectional view along line 3-3 of Figure 1;

Figure 4 is an enlarged 'fragmentary view in perspective depicting the lens assembly and adjusting means;

Figure 5 is a perspective view of a cover arrangement mounted or. the table of the appaductionsof various objects may be directly obratus of Figur l and shown ii. open position;

Figure 6 is a perspective view of an adapter mounted on the apparatus of Figure 1;

Figure 7 isa view similar to Figure 3 and illustrating the lens plate in vertical position; and

Figure 8 is a perspective view in enlargement of a portion of the rear wall of the cabinet showing a slide panel in place of the projector of Figure 3. Referring to the drawings, and more particularly to Figures 1, 2 and 3 thereof, the numeral i6 generally denotes a cabinet that is open at the this invention. This includes a support 66 that is 4 top and that includes a base pedestal I I. Above and across the cabinet top there is disposed a work table I2 that is provided with a central opening i8 within which there is a translucent panel l4 which may be transparent and which is composed of a suitable glass or similar material. The work table carries a pair of depending brackets IS. A tubular member I6 is open at each end andis telescopically positioned in th upper part of the cabinet. Bolts I'l extend through opposite walls of tubular member is and brackets IE to thereby pivotally connect the work table to the tubular member. Each bolt is provided with a wing nut l8 for maintaining the work table in desired tilted position with respect to'the cabinet. Suitable roller or ball bearings I9 are provided to minimize friction and facilitate the raising and lowering of tubular member l6 with respect to the cabinet.

The tubular member and the work table 12 are raised and lowered along a substantially vertical path at the will of the operator by a mechanism which will now be described. This mechanism includes a hand-crank 28 that is connected to a shaft 2| which carries a pair of driving gears 22 that mesh with driven gears 23 rotatably mounted on stub shafts 24 as best shown in Figure 3. Also mounted on stub shafts 24 are sprocket wheels '25. Corresponding sprocket wheels 26 are mounted on stub shafts 21'. Endless wheels 26 and 26 in the usual manner. Each chain 28 carries a bracket or connector 29 that engages a part of the tubular member. Upon actuation of hand-crank 26, shaft 2i is rotated and the various gears and sprocket wheels cooperate with endless chains 28 to move connectors 29 and tubular member l6 either upwardly or downwardly to thereby adjustthe vertical position of table board l2. Cabinet 16 is provided with slots 38 through which locking members 3| project for engagement with sprocket wheels 26 to lock the sprocket wheels at the will of the operator.

The front wall of the cabinet carries a'door 32 that is hinged at its side edg and a door 33 that is hinged at its bottom edge. A partition 34 having a central opening 85 divides the interior of the cabinet into a lower or light compartment 36 and an upper or lens compartment 31. A removable shelf 38 is slidable into the lower portion of the cabinet on rails 38 and constitutes the bottom wall of the cabinet. Reference numeral 48 generally denotes an object-holder assembly preferably consisting of a turret 4lrotatable on a substantially vertical axis and formed with a member 42 that extends into and is pivotally coupled to a bifurcated member 43 by a bolt 44. An object-holder plate 45 is carried by member 48. A handle 46 constituting an extension of bolt 44 permits of rotation of the object-holder plate about the axis of turret 4|.

Reference is now had to Figures 1, 2, 4 and 7 for a full understanding of the lens assembly of secured to the rear wall of the cabinet and that is provided with a pair of vertical grooves II which receive bent-over portions 62 of a pair of arms 68. The front face of support 50 carries a pair of vertical racks 64 which mesh with pinions 66 that are secured to a shaft 66 which extends through arms 62 and a vertical slot 61 in a side wall of the cabinet. A hand knob 68 for imparting rotation to shaft 66 is connected to the outer end of said shaft. A knurled lock nut 69 is in threaded engagement with shaft 66 and serves to lock said shaft in desired vertical position. Each arm 63 is provided with an elongated notched slot 68 and an elongated bayonet slot 6|. A lens plate 62 is disposed between arms 53 and is provided with pins 63 that extend through slots 68. Threaded pins 64 extend laterally of plate 62 and are adapted to be received in bayonet slots 6|. Wing nuts 65 .engage pins 64 and serve to lock lens plate 62 in the position shown in full lines in Figure 4. By loosening wing nuts 65 and moving lens plate 62 toward the rear of the cabinet, pins 64 are disengaged from bayonet slots 6| and the lens board is pivoted by gravity to the position shown in dotted lines in Figure 4 or to any intermediate. position, as desired. The lens board is provided with a central opening 66. A plurality of lenses 61, 68 and 68 of different focal length are pivotally supported lens 68 alone registers with opening 66.

A pair of tubular electric lamps 15 are mounted above and to the side iof object-holder within light compartment 36. Each lamp is connected chains 28 cooperate with corresponding sprocket Y to a suitable source of electricity (not shown) and is, provided with a combined light housing and reflector 16 having ventilation apertures I1 and an arcuate shade 18. As is best shown in Figure 2, light rays from lamps 15 are directed onto object-holder 45 by reflectors 16. The light rays are then reflected through opening 35 in partition 34, through opening 66 in lens plate an object plate frame 81, and a bellows 88. Bellows 88 is connected to a frame 88 and registers with an opening 66 in the rear wall of the cabinet. 'A circular opening BI is provided in door 22 directly opposite opening in the rear wall of the cabinet. Opening 8| is normally closed by closure 92 that-is pivotally supported to door 22 at 93. When projector 82 is not in use, it may be removed from the cabinet and bracket 8i may be collapsed to permit shelf 86 to assume the position indicated by the dotted lines in Figure 3. Also, a slidable panel closure 84 (see Fig. 8) is inserted in frame 88 .to cover opening 86.

When projector 82 is in service, 1611b board 62 is adjusted to the position illustrated in full lines in Figure 7 and in dotted lines in Figure 4. At such times closure 62 is pivoted away from openopening 90 by projector 82 pass through opening 66 and .the lens registering therewith, and then pass through opening 9| whence they are projected on a screen,a sensitized material. or the like (not shown) as is indicated in Figure '7.

In Figure 5 I have illustrated a table board cover 95' that includes an elongated U-shaped fitting 96 engaging an edge of the table board,

and a frame consisting of a pair of parallel arms 91 and a cross piece or handlebar 98. Each arm 91 is provided with a slot 99. The cover proper is indicated by numeral I and consists of a plurality of wood slats IOI mounted on a cloth backing I02 that is joined at its lower edge to fitting 96. The upper portion of'cover I00 is secured to a pair of pins I03 which are slidable v in slots 99 and are provided at their free ends with removable knobs I04. A cushion I of rub-v ber or the like is provided between arms 91 and cover I00 to absorb impact shocks when the cover is lowered upon the work table. It will be observed that cover 95 is substantially co-extensive with the surface of the table board.

' An adapter for the work table is shown in Figure 6 and comprises a panel I06 that has a central opening (not shown) and that is con nected at one end to a U-shaped fitting I0'I which engages an edge of the work table. The opposite end of'the adapter panel carries a pair of upwardly projecting pins I08. A removable 'U-shaped fitting I09, adapted to slip over adapter panel I06 and the edge of the work table, is

.. formed with a pair of bayonet slots I I0 for receiving pins I08. A frame III that is open at one end is mounted on panel I06 directly above translucent panel I4 of the table board. A frame H2 carrying a ground-glass plate I I3 is coupled -to frame III by a plurality of hinges H4. Leaf springs II5 are attached to the upper surface of frame III and bear upon hinges II4. Hinges I I4 permit the introduction of a film-holder H6 between adapter panel I00 and frame II 2 against the actioyiof leaf springs H5. This arrange-' ment permits the operator to obtain an enlarged or reduced reproduction of the object supported onthe object-holder on" a sensitized plate I" in film-holder H6. 1

Based on-thev foregoing description, it is believed that the objects, advantages 'and operation of this invention will be readily comprehended by persons skilled in the art. It is to be understood, however, that various changes in the apparatus herewith illustrated and described may be resorted to without departing from the spirit of jing 9| in door 32. The lens board is adjusted vertically until the axes of openings 66, 90 and SI I coincide'whereby light rays transmitted through so constructed and arranged that only one thereof at a time may be pivoted so as to register with the opening.

2. Inapparatus of the character described, a cabinet having an open top, a table disposed above and acrosssaid top and including a translucent panel, said table being pivotally supported x on a substantially horizontal axis, means for raistally ing and lowering the table with respect to the cabinet, an object-holder in the lower portion of the cabinet, meansifor tilting the object-holder,

means for directinglig'ht rays onto the objectholder, and substantially vertically and horizonovablelens means positioned the cab.- inet intermediate the object-holder and the table, said lens means comprising a plate, an opening in, the plate, and a plurality of lenses havin different focal lengths, said lenses being independently and pivotally secured to the plate and being so constructed and arranged that only one thereof at a time may be pivoted so as to register with the opening.

' 3; In apparatus of the'character described, a cabinet having an opentop, a table disposed above and across said top and including a'tran'slucent panel, means for raising and lowering the table with respect to the cabinet, an object-holder in. the lower portion of the cabinet, means for rotatably supporting the object-holder on a, substantially vertical axis and for tilting the objectholder on a substantiallyhorizontal axis, means for directing light rays onto the object-holder,

and substantially vertically movable lens'means positioned in the cabinet intermediatethe objectholder and the table.

4. In apparatus of the character described, 'a cabinet having an open top, a table disposed above and across said top and including a, translucent panel, said table being pivotally supported on asubstantially horizontal axis, means for raising and lowering the table with respect to the cabinet, an object-holder in the lower portion vertically and horizontally movable lens means this invention or'the scope of the:appended claims.

I claim:

- 1. In apparatus of the character described, a

cabinet having an open top, a table disposed above and across said top and including a translucent panel, said table being pivotally supported 'on a substantially horizontal axis, means for raising and lowering the table with respect to the cabinet, an object-holder in the lower portion of the cabinet, means for tilting the object-holder, means for directing light rays onto the objectholder, and lens means positioned in the cabinet intermediate the object-holder and the table,

said lens means comprising aplate, an opening h in the plate, and a plurality of lenses having different focal lengths, said lenses being independently and pivotally secured to the plate and being positioned in the cabinet intermediate the objectholder and the table, said lens means cbmprising I a plate, an opening in the plate, and a plurality of lenses having different focal lengths independently and pivotally secured to the plate and being so constructed and arranged that only one thereof at a time may be pivoted so as to register with the opening. 7

5. In apparatus of the character described, a cabinet having an open top, a table disposed above and across said topfand including a translucent panel, a, removable sliding shelf in the lower portion of the cabinet, an object-holder rotatablysupported by and above the shelf on a substantially vertical axis, means for tilting the object-holder on a substantially horizontalaxis, and lens means positioned in the cabinet intermediate the obiect-holder and the table, said lens means comprising a plate, an opening in the plate, and a plurality of lenses having different focal lengths, said lenses being independently and pivotally secured to the plate and being soconstructed and arranged that only one thereof at a time may be pivoted so as to register with the opening. 1 i

6. In apparatus of the character described, a cabinet having an open top, a table disposed above and across saidtop and including a translueent panel, a removable sliding shelf in the lower portion of the cabinet, an object-holder rotatably supported by and above the shelf on a substantially vertical axis, means for tilting the object-holder on a substantially horizontal axis,

and substantially vertically and horizontally movable lens means positioned in the cabinet intermediate the object-holder and the table, said constructed and arranged that only one thereof at a time may be pivoted so as to register with the opening.

SAMUEL BLANC.

Images