Improvement in sash-fasteners
US 83983 A
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2 @te dal @time Je du WALTER K. MARVIN, OF NEWA YORK, N. Y.
Lenen Patent Ne. 83,983, deteez Neeembee 1o, 186s.
IMPROVEMENT IN SASI-I-FASTENERS.
To whom it may concern:
Be it known that I, WALTER K. MARVIN, of New York, in the county and State of New York, have invented certain new and useful Improvements in Sash- Fasteners; and I hereby' declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which- Figure l is a plan view of my improved sash-fastener, with the parts in the position which they occupy when the sash is free.
Figure 2 is a like view of the same, with the parts inl position for compressing the sash.
Figure 3 is a perspective View of the lower plate of the sash-fastener.
Y Figure d represents a section on the line x y, fig. 2.
Figure 5 is a perspective view of the double cam,l
and its shaft for actuating the compressing-plate or plates of the fastener'.
My inventionV relates to that class of sash-fasteners in which a cam is employed to compress the sash to be locked or fastened, and it may be stated, in general, to consist- First, in the employment, for the purpose mentioned, of a double cam or eccentric, or two cams, or eccentrics, mounted upon the same shaft, arranged in such manner that the movement of the fastening-device or devices, by which the sash'is compressed, shall be equal rto the sum of the eccentricities of the two cams.
Second, in the combination, with the two jawed plates of the fastener, of two cams or eccentrics, mounted upon the same shaft, and received, the one in a recess found in the outer plate, the other ina recess in the inner plate, the said parts being arranged to operate, with relation to each other and to the sash, as hereinafter explained.
'By the use of the devices named, I am enabled to construct the fastener cheaply, to 'obtain, with small .eccentrica a considerable movement of the compress- -ing-plates or devices, to bold the sash, when compressed, rmly and with certainty, to cut out but a small portion ofthe plates to allow the free movement of the cams, and to compress either one or both of the window-sashes, as may be desired. Other obvions advantages are also possessed by the fastener, ,which need not be recited.
To enable others skilled in the art to understand the nature of my invention I will now proceed to describe the manner in which the same is or may be carried into effect, by reference to the drawings.
The fastener is composed of two plates, A B, placed one upon the other. The upper plate, B, which rests upon and is supported by the plate A, has formed, on its under side, lugs or ears a,.which t in a longitudinal slot, b, out in the lower plate, and a strip, c, screwed to. the ears a from the under side .of the plate A (which is recessed, so as toreceive saidv strip) holds the two plates together, at the same time allowing the ears a to slide freely in the slot.
The outer end A of the plate A, is bent or formed at iight angles to the main part of the plate, and near the inner end of the plate B, a jaw, B', is' formed or turned up in a similar manner These two plates may be let into the side of the window-frame contiguous to the sash or sashes, so that the exterior plate B will be flush with the face of the jamb. They can be used with either one or two sashes, and to compress either or both. For instance,
when but one sash, M, is to be compressed, the outer end A of the plate A need not be formed, but the sash be compressed between the end or jaw B of the sliding plate B and the bead o, which separates the two sashes, and so, in a similar manner, the single sashes of railway-car windows may be fastened. Or, if it be designed to compress both the upper and lower sashes M N, the two plates A B may be mounted in the window-frame, at the point where the two sashes meet, in such manner as that both will be capable of a sliding movement, and they maybe moved simultaf neously in opposite directions, so that the sash Mwill be compressed between the jawB, which moves up against it, andthe bead o, (which is fixed and immovable,) and, on the other hand, the outer or upper sash N will be compressed between the bead o and the jaw A' of the plate A, which moves in a direction opposite to the movement of plate B. f
In order to thus operate one or both of the plates A B, I proceed as follows: l
I make use of a double cam or eccentric, G D, shown in perspective in iig. 5, mounted upon a shaft or pin', F, which is provided with crank, F, or other handle of ordina-ry or suitable construction. The two eccentrics C D are secured, one above the other, on the shaft, and are so placed that the point of greatest de parture from the axis of the shaft in the one will be diametrically opposite, or thereabonts, the 'like point of the other.
.The upper cam or eccentric D is received in a chamber, IZ, inthe outer plate B, and the lower eccentric C is held in a recess, j, formed inthe under plate A.
The pin or lower end of the shaft E passes through the plate A, and is upset, or has a nut attached to its end, so as to hold the cam and shaft in place.
The chamber d is formed, as shown in figs. l and 2.,
having about the same length as the diameter of the eccentiic D, but a somewhat greater breadth, so as to allow the plate B to be 'moved longitudinally by means of the eccentric without lateral displacement. The chamber f, of the lower eccentric C, is, for a similar reason, of a like form.
But, as the end e of the shaft E is held in the plate A, in which this chamber is situated, it becomes necessary to form, for the reception of the pin, a slot, g, in lengthI equal to the eccentrioity of the cam C, so that the shaft or pin e may move towards one or the other end of the slot, according to the position of the eccentric. For instance, if the eccentric be turned so that itsbulging portion will occupy the position shown in Iig. 1, the pin will be moved to the left-hand'end of the slot; and if, on the contrary, it be turned so as to occupy the position represented in figs. 2 and 3, the pin will be moved to the right-hand end of the slot.
Now, let it be supposed that the device is to be used for fastening a single sash. In this case, the jaw A may be dispensed with, and the plate Acan be immovably attached to the.wi11dow-sash frame, in the position represented in the drawings. Whenthe cra-nk F ,is in the position seen in fig.' l, the bulging part 2 of the outer eccentricD will be turned so as to withdraw the plate orjaw B om the sash M; but, when the eccentric is thus moved, the lower eccentric, whose relation to the upper one is seen in fig. 5, will also be turned, so as to bring its projecting part, V1, to the right of the chamber f, and the pin e and shaft will thus be moved to the opposite end of the slot g consequently, the eccentric D, while drawing back the plate B, will itself be moved back bodily, so that the plate B and its jaw will traverse a distance equal to the sum of the eccentricities of the two cams.
In like manner, when the position of the crank' is changed to that shown in fig. 2, the cams or eccentrics will be moved forward so as to cause the jaws Bto press the sash firmly against the bead o, and the distance traversed by the jaw will be equal ,to the eccentricity of the cam D, plus the distance travelledby the pin F e from one end to the other of the slot g, which is equal to the. eccentricity of the cam C.
,It will be seen that, by this simple arrangement, the whole device can be made in compact and neat form, and, as all the parts, excepting the eccentrics, may beA cast, the expense is reduced to a comparatively small sum.
As above intimated, the device may be employed for fastening both Sashes of the window. I In lsuch case, it is let into the side of the window-frame, in the manner above described, at the point where the two sashes meet,'so that it will always be covered and held in position by them. The bottom or interior plate Av should not, in this case, be attached immovably to the frame, but should be so arranged that it, as well as the plate B, may be capable of a sliding movement. When it is desired, under this arrangement, to operate the fastener, it will be seen-that the jaws A B of the respective plates A B, will each move in a directionl opposite to that pursued bythe'other, this result being due to the double eccentric C D. For instance, when the crank is turned from the position representedA in Iig. 1 to that shown in figs. 2 and 3, the outer eccentric D will move forward the jaw B against the sash M, which will be compressed and held, as above indicated, between the jaw and one side of the beadv o. At the same time, the eccentric C will draw the jaw A of the sliding inner plate A against the sash N, the movement of the plate being allowed by reason of the slot g, and this sash will be compressed and held between the jaw A and the other side of the bead. And so, in releasing the sashes, the movement of the handle F actuates simultaneously both eccenu tries, and the jaws A B are moved apart and away from their respective sashes. 1
Having now described my invention, and the ma'nner in which the same is or may be carried into effect,
What I claim, and desire to secure by Letters Pat ent, is-' i 1. A sash-fastener, composed'of one or more sliding jaws, or equivalent compressing and holding-devices, in combination with a double cam or eccentric, shaft, and handle for actuating said jaw or jaws, substan tially as and for the purposes' set forth 2. The'herein-described construction and arrangement of the two jawedI sash-fastening plates, placedI together and recessed to receive the double cam o r eccentric, in the manner specified, the under or lower plate being slotted to receive the end of the cam-shaft, and to admit of the movement of the same in the direction of the length of -the said plate, as and for the purposes set forth.
In testimony'whereof, I have signed my name to` this specification, beforetwo subscribing Witnesses.
v W K. MARVIN.
J. B. Norms,
F. E. BRADsHAw.