US879315A

US879315A - Clock.

Info

Publication number: US879315A
Application number: US40169907A
Authority: US
Inventors: Wilson E Porter
Original assignee: NEW HAVEN CLOCK CO
Current assignee: NEW HAVEN CLOCK CO
Priority date: 1907-11-11
Filing date: 1907-11-11
Publication date: 1908-02-18
Anticipated expiration: 1925-02-18

Description

W. E. PQRTBR. GLOGK.

APPLIOATION FILED NOV. 11, 19 07.

if OZJ I WILSON E. PORTER, OF NEW HAVEN, CONNECTICUT,

ASSIGNOR TO NEW HAVEN CLOCK '00.,

OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

CLOCK.

Specification of Letters Patent.

Yatented Feb. 18, 1908.

Application filed November 11' 1907. Serial No. 401.699.

To all whom it may concern:

Be it known that I, VILSON E. PORTER, a citizen of the United Stat-es, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Clocks; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1 a view in rear elevation of a clock provided with my improvement. Fig.

2 an enlarged broken view thereof in side elevation. Fig. 3 a broken view of the same in vertical section. 4 a detached view in rear elevation of the bearing-ring and signalwheel. Fig. 5 an inside view of the same parts. Fig. 6 a detached view in rear elevation of the setting-wheel. Fig. 7 a detached view in inside elevation of the cut-out wheel and the setting-wheel.

My invention relates to an improvement in that class of clocks the striking mechanism of which is designed for signal purposes rather than to measure the time, as, for reminding a nurse when to give medicine and the like, the object of my present invention being to provide a clock of this character with mechanism whereby the signal bell may be varied in its frequency as desired.

With these ends in view my invention consists in a clock having certain details of construction and combination of parts as will be hereinafter described and pointed out in the claims.

In carrying out my invention as herein shown, I mount upon the projecting rear end of the center arbor 2 a hub 3 upon which I stake a wheel 4 which, for want of a better term, I shall call a signal wheel. This wheel 4 is formed with fourcorresponding arms 5 equally separated from each other by wide notches 6. Pins 7 mounted in the arms 5 support a graduated bearing ring 8 containing

characters

1, 2 and 4 located adjacent to radial index lines 9, 10 and 11. Under this construction a space 12 is formed between the ring 8 and wheel 4, this space being entered by the finger 13 of a count hook 14 which is mounted upon the projecting rear end of an oscillating shaft 15 carrying the hammer tail 16 of a hammer 18 of any ordinary hammer mechanism. hen the finger 13 of the hook 14 is free to enter each of the four wide notches 6, in the wheel 4, a signal will be sounded once in fifteen minutes for the reason that the wheel 4 makes one complete revolution once an hour. To vary the signal I employ a cut-out wheel 19 having arms 20, 21 and 22separated by

differential spaces

23, 24 and 25 increasing in width in the order in which they are numbered. The said wheel 19 is enough smaller in diameter than the internal diameter of the bearing ring 8 to pass through the central opening of the same into the space 12 so as to be brought within the range of the finger 13 of the count hook 14, the said finger reaching rearward through the notches 6 of the wheel 4 so as to engage with the periphery of the wheel 19 as well as to drop into the

spaces

23, 24 and 25 thereof. The said wheel 19 is staked upon the inner end of a knurled sleeve 26 carrying a setting wheel 27 having a radial index line 28 for coaction with the index lines 9, 10 and 11 aforesaid.

The wheel 27 is a trifle larger than the inner diameter of the ring 8 so that its outer edge rides upon the inner edge thereof when the wheel 27 is turned by gripping the outer end of the sleeve 26 which is knurled as at 29 for this purpose. By rotating the wheel 19 upon'the ring 8 so as to cause its index line 28 to coincide with either one of the index lines 9, 10 and 11, it is apparent that the arms 20, 21 and 22 and the

differential clearance spaces

22, 24 and 25 will be changed in their relations to the arms 5 and notches 6 of the signal wheel 4. Thus if the index line 28 is brought to coincidence with the line 10 adjacent to the character 1, the notches 6 will with one exception be blocked by the arms 20, 21 and 22 so as to permit the finger 13 of the count hook 14 to fully enter but one of the notches 6. This will limit the signals to one signal for every revolution of the wheel 4, or in other words, to one signal in an hour. By turning the cut-out wheel 27 to bring the index mark 28 into coincidence with the index mark 9 adjacent to the character 2, the wheel 19 will block two of the notches 6 leaving only two free to be fully entered by the finger 13. This will give two signals during each hour. By turning the wheel 27 to bring the index line 28 into coincidence with the index line 11 adjacent to the character 4, the arms 20, 21 and 22 will be positioned so as to leave the four notches 6 sufficiently open for the entrance into them of the finger 13 of the count hook 4. In this adjustment of the parts a signal will be given once in fifteen minutes. Of course by varying the construction of the signal wheel 4 and the cut out wheel 19 the length of time elapsing between the signals may be varied.

In order to hold the wheel 19 in place after it has been set, I locate a spiral spring in the hollow outer end of the sleeve 26 and put this spring under tension by means of a knurled finger-button 31 provided at its innerend with a flange 32 which rests upon the outer end of the sleeve 26, the button 31 also having a shoulder 33 entering the outer end of the sleeve and being furnished with a threaded stem 34 entering the hub 3 which is mounted, as aforesaid, upon the projecting rear end of the center arbor 2. The stem 34 is threaded from right to left so that by turning the finger-button 31 from rightto left the center-arbor 2 may be turned for setting the signal-wheel 4 with respect to the finger 13 of the count hook 14. By grasping the knurled portion 29' of the hub 26 the same may be rotatedin either direction against the tension of the spring 30 so as to bring the indeX line 28 into coincidence with any one of the index lines 9, 10 and 11 according to the frequency which it is desired to have the bell ring. The turning as described of the cut-off wheel 19 by the hub 26 in no wise disturbs the position of the wheel 4 which will only be changed by grasping and turning the finger button 31 which corresponds to the time-setting button of an ordinary clock. 4

For the purpose of shutting off the signal altogether, I employ a switch 35 hung upon a pin 36 and at its inner end arranged to engage with the count hook so as to hold the same entirely away from the

wheels

4 and 19.

I claim:

1. In a variable signal clock, the combinationwith the center arbor thereof, of anotched signal wheel connected with the said arbor for rotation thereby, a bearing-ring carried by the said signal-wheel with a space between the two wheels, a cut-out wheel provided with arms and differential notches, entered into the said space between the signal-wheel and bearing-ring, a count hook coacting with the signal and cut-out wheels, and a set ting-wheel connected with the cut-out wheel for rotating the same and bearing upon the bearing-ring upon which it is rotated to position the said cut-out wheel.

2. In a variable signal clock, the combination with the center-arbor thereof, of a signalwheel connected with the rear end of the said arbor for rotation thereby, a bearing-ring connected with the signal-wheel, rotating therewith and separated therefrom by a space, a cut-out wheel adapted to be entered through the said ring into the said space and formed with arms and differential clearance spaces, a setting-wheel bearing upon the said ring, a sleeve carrying the said cut-out wheel and setting wheel whereby they are rotated independently of the signal-wheel and ring, a spring for holding the setting and cut-out wheels against rotation, and a finger-button connected with the arbor for rotating the same.

3. In a variable signal clock, the combination withthe center-arbor thereof, of a hub mounted upon the projecting rear end of the same, a signal-wheel mounted upon the said hub, a bearing-ring supported by the signal wheel from which it is separated by a space, a cut-out wheel entered into the said space through the said bearing-ring, a sleeve carrying the said cut-out wheel, a setting-wheel carried by the said sleeve and bearing upon the outer face of the said ring, a spring located within the sleeve for frictionally holding the setting-wheel against rotation with respect to the bearing-ring and signal-wheel, and a finger-button formed with a stem entering the outer end of the said hub for turning the center arbor, the said spring being placed under tension by the saidfinger-button.

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

WILSON E. PORTER.

Witnesses:

GEORGE D. SEYMOUR, CLARA L. WEED.