US1178439A - Finder for cameras. - Google Patents

Description

J. ARRUFAT.

FINDER FOR CAMERAS. APPLICATION FILED DEC. 30. I915.

1,178,439. Patented M54, 1916.

UNITED STATES PATENT OFFICE- JOSEPH ABRUI'AT, OF BINGH AMTON, NEW YOIBiK, ASSIGNOR TO ANSCO COMPANY, OF BINGHAMTON, NEW YORK, A. CORPORATION OF NEW YORK.

FINDER FOR CAMERAS.

Specification of Letters Patent.

Patented Apr. 4, 1916.

Application filed December 30, 1915. Serial No. 69,320.

To aZl whom it may concern citizen of the United States, and a resident of the city of Binghamton, county of Bro'ome, and State. of New York, have invented a new and useful Improvement in Finders for Cameras.

It is the purpose of this inventiontopro I nately with the shoulders 7 and thus act as vide a finder adapted to vertical and horizontal finding,'and having a spring tension device adapted to hold the finder in its dual positions, the spring being of such construction that it is exceedingly compact, which is a matter of consequence in small cameras,

that its engagement with the finder mechanism shall be such thatthe movement of the finder will be. smooth, easy and complete,

7 that is to say, that the finder will surely attain its extreme movement in both vdirections and will be maintained in that position, and finally, that there shall be no rigid holding of any part of the spring, on the contrary, that it be adapted torespond throughout to the stressapplied to it, thus reducing its liability of fracture, and assuring its smooth and resilient action.

Referring to the drawings Figure 1 is a rear elevation of one formin which the inyention may be embodied, showing the parts 1n positionfor vertical finding; Fig. 2 is a view similar to Fig. 1, the finder having been moved through an arc of-ninety degrees, showing the parts adapted to. horizontal finding; Fig. 3 is a side elevation,

partly in section, of the devices shown in Figs. 1 and 2; Fig. 4 is an elevation of the spring separate from the other parts.

In the drawings hereof 1 represents any suitable fixed part of the camera. In the instance shown it is a part projectin from the usual sliding front frame of a olding camera which supports the lens devices, the

front end of the bellows, etc.

2 is the finder, .which may be of any preferred construction.

3 is the lens casing for the finder.

4 is a bracket which supports the finder. It is composed of two members, as shown, one of which is pivoted, as by pivot 5, to the fixed part or frame 1 and the other is rigidly connected to the finder, as shown. On the lower edge of the pivoted member of the bracket 4 there is a segmental recess 6, whereby two shoulders 7, ,7, are formed,

v which limit the movement of the finder. Be it known that I, JOSEPH ARRUFAT, a

These shoulders are of course separated by a distance equal to ninety degrees. Near the' edge of the segmental recess 6 of the bracket 4 and midway between the shoulders 7, a headed stud 8 is fixed to the bracket .4 and upon the frame 1 is fixed another headed stud-9, which is so located as to engage altera stop to the movement of the finder. 10 is a spring Its form, when. disconnected from the other parts, is shown in Fig. 4. Its two free ends are provided with eyes 11,

11. When assembled as shownin Fig. 1,,

the two ends of the spring are lapped upon each other, so that the eyes 11 register with each other, and they are then, or as a previous operation, closed about the headed fixed stud 9 as shown, and the centralportion of the spring is sprung downwardly toward the pivot 9 and engaged under the head of the stud 8, so'that the parts assume the position'shown in Figs. 1 and 2. In order to 3 tion be adopted, as mightotherwis be the case. forms no part of the invention.

This, however, is not essential and The operation is as follows: Assume that the parts are in position shown in Fig. 1 adapted to vertical finding and the operator desires to find for a horizontal exposure: He simply grasps the finder with his thumb and finger and presses it over to the left as usual, carrying with it the'bracket which is rigidly attached to it, and during this movement the right hand shoulder 7 will leave the stud 9, moving upwardly, and the left hand'shoulder 7 will approach the stud 9, and when it has reached that stud will be stopped against it, the same as the right hand shoulder 7 was previously sto' pped against it, and during the swinging operation also the-stud 8 will during the first half of the movement approach nearer and nearer to the stud 9, thus increasing more and more the stress upon the spring 10 and during the central portion and the straight members extending outwardly from the pivot 9 all 'slightlychange their relation toeach' other and even the eyes 11 pivot about the stud 9,

so that the entire spring contributes to the smooth, easy, resilient action, there being no immovable part of it Thus no excess strain is brought upon any part ofit, and as a peculiarly important feature, the length of metal in'the spring, hence its efficiency as a resilient member, is greater than is possible in any other form of spring known to 1 claim 1. A spring controlled finder comprlsmg a pivot on a suitable fixed part of a camera,

a view finder pivotally supported on said pivot, a stationary stud on the camera, another stud on the View finder which passes between the stationary stud and said pivot when the view finder is oscillated, and aspring loop, both ends'of which are ,held by the stationary stud, the central part of which spring engages with but is not attached to the stud on the finder. x s

2. A spring controlled finder, the spring whereof is movably held at both ends upon a suitable fixed support, a bracket rigidly attached to the finder and pivoted to a suitable fixed support and provided with shoulders adapted to stop against the fixed support for the spring, and having a stud midway between the shoulders which en- 'gages with the central portion of the spring.

me, theispace required being the same, ex-

cept the coiled spiral form, which, however, would be objectionable because of its cylindrical shape and lack of tension.

It will be obvious to those who are familiar with such matters that departures may be made from the details above described and illustrated without departing from the essentials of the invention. I therefore do not limit myself to such details.

3. A spring controlled finder, the spring whereof is movably held at both ends, a bracket rigidly attached to the finder and -pivoted to a suitable fixed support, shoulders upon the bracket adapted to impinge against a'suitable fixed stop and a headed stud on the bracket midway between the shoulders, beneath which head the central portion of the spring engages.

' In testimony whereof I have signed my name to this specification.

JOSEPH ARRUFATQ

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