US1336204A - Dial-mat fastening for clocks - Google Patents

Description

W. L. CHOU?! E. RUST.

DIAL MAT FASTENING FOR CLOCKS.

APPLICATION FILED OCT. 10, 1919.

Patented Apr. 192%.

UNITED STATES PATENT OFFICE.

WALTER L. CROUCH AND ARTHUR E. RUST, OF BRISTCL, CGNNECTICUT, ASSIGNORS TO THE E. INGRAHAll/f COMPANY, INC, OF BRISTCL, CONNECTICUT, A CORPORATION.

DIAL-MAT FASTENING FOR- CLOCKS.

Application filed October 10, 1919.

To all whom it may concern Be it known that we, WALTER L. CROUCH and ARTHUR E. Rosa, citizens of the United States, residing at Bristol, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Dial-Mat Fastenings for Clocks; and we do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in

Figure 1 a view in front elevation of a dial-mat constructed in accordance with our invention and shown as applied to the dialboard of a clockrase, the sash having been removed.

Fig. 2 a broken view in side elevation on an enlarged scale, showing one of the dialmat fastenings.

Fig. 8 an enlarged view in cross-section on the line 33 of Fig. 1.

Our invention relates to an improved fastening for the dial-mats of clocks, the object being to provide a simple, cheap, convenient, and reliable means for fastening dial1nats in place without the employment of screws passing through the mat and having their heads exposed thereupon so as to interfere with the closing of the sash.

lVith these ends in view. our invention consists in a dial-mat fastening having certain details of construction as will be hereinafter described and pointed out in the claims.

In carrying out our invention, as herein shown, the outwardly inclined bearingflange 4; of the light sheet-metal deformable dial-mat 5 is formed with a pair of semicircular, fastening-perforations 6 and a pair of corresponding oppositely located perforations 7, the perforations of the respective pairs being located on opposite sides of the horizontal axis of the dial. These perforations receive the rounded, overhanging heads 8 of pins 9 set into the dial-board 10 close to the edge of the recess 11 formed therein for the reception of the inwardly inclined dial-mat 5, the lower edge of which is formed with a bead or foot 12, resting upon the paper dial 13 which is supported upon a dial-plate 14, which in turn rests upon the leaf 15 of an angular retaining ring, the leaf 16 of which is secured to the outer Specification of Letters Patent.

Patented Apr. 6, 1920.

Serial No. 329,822.

face of the mat 5. But these details now being described have nothing to do with my present invention. The dial-mat is struck up to form a fiat shoulder 17 and carries a sash 18 secured to it by a hinge, one member 19 of which is shown in Fig. 1. It will be observed by reference to Fig. 3 that the fastening perforations 6 and T are located considerably below the plane of the flat shoulder 17. The sash mounts the dial-glass 20 which is concave-convex in form as herein shown and held in place by clips 21 located within the sash 18.

In applying our improved dial-mat, the right-hand perforations 6 are hooked over the heads 8 of the two right-hand pins 9, after which the left-hand portion of the mat is pressed down upon the rounded heads 8 of the two left-hand pins 9. Now as the mat is made of light sheet metal it will spring and deform sufficiently to permit the heads of these left-hand pins to snap, so to speak, into the two left-hand perforations 7. Or,-the left-hand perforations 7 may be hooked over the heads of the left-hand pair of pins and the right-hand perforations 6 snapped over the right-hand pair of pins, reversing the operation above described. When the pressure upon the mat is removed, it will resume its original form with the result that the straight inner edges of its four perforations will be engaged with the fiat underfaces of the rounded heads of the four pins, whereby the mat will be securely fastened to the dial-board, from which, however, it can be removed by springing it and so deforming it sufliciently to disengage it from one or the other of the two pairs of pins. By our improvement the pins are located so as not to interfere with the closing of the sash, whereas when screws have been passed down through the flat shoulder 17 of the mat their heads have interfered with the edge of the sash.

We do not limit ourselves to locating the perforations in the dial-mat in the positions in which they are shown and described, nor to the number of perforations and pins employed, our invention comprehending deforming the dial-mat to permit it to be engaged with and disengaged from suitable fastening means mounted in the clock.

We claim 1. The combination with dial-mat fastening means mounted in thefront of a clock,

of a deformable dial-mat adapted when deformed under pressure to be engaged with and disengaged from the said fastening means after which it resumes its normal shape, its retention in place after engagement with the said means being due to its resumption of its normal form.

2. A dial-mat fastening for clocks, consisting of a struck-up sheet-metal mat, having its outer flange provided with fasteningperforations for the reception of the heads of fastening pins.

3. The combination with a struck up sheet-metal dial-mat having oppositely located fastening-perforations formed in its outer flange, of fastening-pins having overhanging heads over Which the mat is hooked and sprung as described.

In testimony whereof We have signed this specification in the presence of two subscribing witnesses.

VALTER L. CROUCH. ARTHUR 1t. RUST. \Vitnesses WM. P. HYNns, EDW. INGRAI-IAM.

Images