US1136697A - Enlarging-lantern or projectoscope. - Google Patents

Description

-r W-;,MINOR.' ENLARGNG LANTERN OR PROJEGTOSCOPE 1&1569 v MPLliIATION FILED AUG. 15, I914- 2 SHEETS-SHEET 1.

F. w. MINOR. EN LARGINQ. LANTERN 0R PROJECTOSCQPE.

APPLICH'ION FILED AUG-15. 1914 Patented Am. 20, 1915.

2 SHEETSSH-EET 2.

Fen an-"w. union, or nronnonn, VIRGINIA.

ENLARGING-LANTERN R PROJECTOSCOPE.

1,135,697. i I I. Specification of Letters'Patent. I Patgntd A- j 2G,,1Q15? .Applicationfiled August 15, 1914. Serial No. ssa ssa. I. i j 7 I :endto strike against yoke and properly position the tubes when the plate 8 is slid beneath the guides. U I j A lamp 12 is carried by a" head 13'which' so To all whom it may concern Be it known that I, FRANK W. MINQk.;-0f Richmond, in the county of Henrico, and in the State of Virginia, have invented a certain new and useful Improvement in Enlarging-Lanterns orProjectoscopes, and do hereby declare that the following is a full, clear,'and exact description thereof.

The object of my invention has been to provide a lantern for use in enlarging and projecting which shall have, among others, the advantages of being simple, compact, cheap and convenient, and to such ends my invention consists in the enlarging lantern or projectoscope hereinafter specified.

In the accompanying drawings, Figure l is a. side elevation of a lantern embodying my invention; Fig. 2 is a vertical, longitudinal, sectional view through the axis of .the lantern shown in Fig. 1; Figs. 3, 4 and 5 are detail views of the lamp mounting at the rear of the lantern; and, Fig.6 is a front view of a lantern.

While I have illustrated in the drawings that embodiment of my invention which is the best embodiment known to me,'such embodiment is to be regarded as typical only of many possible embodiments, and my in: vention is not to be restricted thereto.

, In the illustrated embodiment I have provided a base plate 1 upon which is mounted a saddle 2 adapted to sustain the rear portion of the lantern, comprising telescopic tubes 3 and 4;, the tube 3 containing the condensing lenses, and the tube 4 carrying the lamp hereafter to be described. The saddle is preferably removably secured to the base by dowel pins. A yoke 5 stands normally between the condenser tube 3- and the front ortion of the lantern having the projecting enses, and such yoke-is adapted to receive the frame 6 in which the slide, negative'or other object 7 to be prbjected is carried. The yoke is preferably open at the top so that the slide frame can be inserted from above as well as. from the sides; The said yoke is preferably removably mounted between parallel strips 8 on the base plate. The condenser tube 3 is preferably removably attached to the yoke, and in the present instance I have shown such attachment as consisting of a plate 9 attached to the end of the condenser tube and having its upper and lower edges engaged by guides 10- in any position vertically orfhorizontally so 5;

as to bring its center of light at the optical axis of the condenser lenses. In the present instance I have mounted the said bar. be

tween the said head 18 and a plate 16 that 1s secured therein, and have provided the 7o said bar with a slot 17 which is adapted to engage a pin or screw 18, the handle ofthe bar extending through the slot 19 in the flange of the said bar or cover. The bar can be swung on the pin or screw 18 as one pivot,

so that the lamp will befgive'n a motion h0ri-.-

' zontally, and by'reason ofthe' slot the bar can be raised 0,1 lowered so that the lamp given a capability of adjustment to any position necessai j to bring its center of light so into the desii ed position. I thus provide a' very wide range of adjustment with a simple construction.

The projecting lenses. 20 are mounted in I a tube 21 which is itself mounted in a tube '85 22 that is carried by a preferably larger tube 23, and the latter" telescopes with the tube 24 which is removably attached to the front side of the yoke. The form of attachment which I have chosen for illustraac tion consists of eyes 25 formed on the upper part of the front plate of the yoke andadapted to receive a wire 26 having a handle thereon, an eye 27 formed on the said tube 24, and a guide 28 on the lowerpart of the front face of the yoke, which is adapted to receive a flange 29 on the under side of the said tube.

In the operation of mylantern, it will be understood that the parts being in the posi-- ice tion shown in Fig. 1,the negative or lantern slide which is to be projected or enlarged, is

placed in the yoke being held'by the frame,

and the yoke being open at the top there is the greatest facility for placing the slide in the right position so that it can not only be readily inserted but can be readily inverted or replaced if it be placed by accident in the wrong position at first. By means of the adjustment before described, the lam can he placed in the proper position to bring its center oi light in the axis of the condenser lenses, and by means of the telescopic tubes the proper focal distances canbe obtained. I

When the lantern is'to be stored or transported,the rear tubes are disconnected from the yoke, the front tubes are likewise" disconnected from the yoke, and all of said tubes can be nested together so that they require a very small space. The yoke and the saddle can be disconnected from the base and laid upon it, and thus the lantern, which in operation is a comparatively large, bulky structure, is, When dismantled, brought within a verycompact compass.

I I claim:

1 .A lantern comprising a yoke open at the top and sides, and adapted to receive a transparent object to be enlarged, light forming and condensing means mounted upon and supported by one side of said yoke, and projecting means mounted upon and supported by the other side of said yoke.

2. A lantern comprising a yoke having telescdpic tubes connected to it on the front and rear, said front tubes having project-.

ing lenses and said rear tubes having condensing means and a lamp, said yoke being detachably connected to a base.

3. A lantern comprising a yoke having telescopic tubes detachably connected to it on the front and rear, said front tubes having projecting lenses and said rear tubes having condensing means and a lamp, said yoke being detachably connected to a base.

4. A lantern comprising a yoke having 'telescopic tubes detachably connected to it on the front and rear, said front tubes having projecting lenses and said rear tubeshaving condensing means and a lamp, said yoke being detachably connected to a base, and a saddle adapted to support said rear tubes. I r

5. A lantern comprising a yoke having telescopic tubes detachably connected to it on the front and rear, said front tubeshaving projecting lenses and said rear tubes having condensing means and a lamp, said yoke being detachably connected to a base, and a saddle adapted to support said rear tubes, said saddle being detachably attached to said base.

6. In a projecting lantern, the combination of a yoke, telescopic tubesdetachably attached to the rear of said yoke, one of said tubes containing condensing lenses and the other of said tubes carrying a lamp, and telescopic tubes attached to the front of said lantern and carrying projecting lenses, said latter tubes being smaller in diameter than said' former tubes, so as to be capable of being nested therein.

7. In a projecting'lanter'n, the combination of a yoke, telescopic tubes detachably attached to the rear of said yoke, one of said tubes containing condensing lenses and the other of said tubes carrying a lamp, telescopic tubes attached to the front of said lantern and carrying projecting lenses,'the

latter tubes being smaller in diameterthan said former tubes, so as to be capable of being nested therein, and a base to which said yoke is detachably connected.

8. In 'a projectinglantern, the combination of a yoke, telescopic tubes detachably attached to the rear of said yoke, one of said tubes containing condensing lenses and the other of said tubes carrying a lamp, telescopic tubes attached to the front of said lantern and carrying projecting lenses, the latter tubes being smaller'in diameter than said former tubes, so as to be capable of being nested therein, a base to which said yoke is detachably connected, and a saddle for said first mentioned tubes, detachably connected to said base.

9. A lantern comprising a frame adapted to receive a transparent object to be enlarged, tubes mounted upon and supported mounted upon and supported by-the other side'of said frame, said tubes carrying projecting lenses.

10. A lantern comprising a frame adapted to receive a transparent object to be enlarged, tubes mounted uponand supported by one side of said frame, said tubes carrying a light and condensing lenses, and tubes.

mounted upon and supported by the other side of said frame, said tubes carrying projecting lenses, said latter tubes being smaller in diameter than said former tubes, so as to be capable of being nested therein.

In testimony that I claim the foregoing I have hereunto set my hand.

' FRANK W. MINOR. Witnesses;

NORMAN L. FLIPPEN, Bnssm LAMK'IN.

Images