US437772A

US437772A - Burglar-alarm

Info

Publication number: US437772A
Authority: US
Publication date: 1890-10-07
Anticipated expiration: 1907-10-07

Description

V 2SheetsSheet 1. O. R. CANTERBURY.

(No Model.)

BURGLAR ALARM.

Patented Oct. 7 1890.

By ghlo'rge ys.

vs co., morn-i n (No Model.) 2 Sheets-Sheet 2.

O. R. CANTERBURY. BURGLAR ALARM.

No. 437,772. Patented Oct. 7, 1890.

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UNITED STATES PATENT OFFI E.

CRAlVFORl R. CANTERBURY, OF BRO\VNIVOOD, TEXAS.

BU RG LAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 437,772, dated October '7, 1890.

Application filed May 15, 1890. $eria1No. 361,943. (No model.)

To all whom it may concern:

Be it known that I, CRAWFORD R. CANTER- BURY, a citizen of the United States, residing at Brownwood, in the county of Brown and State of Texas, have invented a new and useful Burglar-Alarm, of which the following isa specification.

This invention has relation to burglaralarms; and the objects in View are to pro vide a very simple and economically-constructed alarm mechanically connected with Windows and doors of a house or a room and adapted to be sounded by a raising or opening of the same, and at the same time to strike a light or illuminate the surroundings.

Other objects and advantages of the invention will hereinafter appear, and the novel features thereof will be particularly pointed out in the claims.

Referring to the drawings, Figure 1 is an elevation of a burglar-alarm constructed in accordance with my invention. Fig. 2 is a longitudinal horizontal section. Fig. 3 is a transverse section through the spring-case. Fig. 4 is a detail in elevation of the matchcarrying wheel. Fig. 5 is a transverse section of the same. Fig. 6 is a detail in transverse section of the igniting friction-wheel.

Like numerals indicate like parts in all the figures of the drawings.

1 designates the alarm-mechanism casing, the front of which is open, and said case is supported in any suitable manner in a room at some central point.

Projecting from the rear wall of the case is a post 2, the outer end of which is provided with a transverse bearing-opening 4. At one side of this post there depends through the casing a standard 5, which above the casing terminates in a knob or handle 6, by which said alarm-casing with its mechanism may be carried. Mounted in the bearing 4 of the post 2 is a shaft 7, which at one end of the casing terminates in a winding-crank 8. The inner end of the shaft is provided with a pinion 10,- and at one side of the pinion and the standard 2 is mounted thereon an escape-wheel 11. The post 5 is provided with a bearing-stud 12, having a bearing-opening 13, which serves as a bearing for the shaft 7 in addition to the bearing 4. At that side of the standard 5 opposite to which is located the escape-wheel 11 is a spring case or box 14:, through which.

the shaft 7 passes, and within said case or box and coiled about the shaft in convolute form is a spring 15, one end of which is made fast to the shaft and the other end to the box or case. A

Upon the shaft 7, at one side of the box 14, is mounted a disk 16, having one or a series of openings 17 formed transversely therein near its periphery. In the openings are mounted hollow tubes 18, adapted to receive matches 19, the heads of the matches proj ecting beyond the outer extremities. In the rear ends of each of the tubes there is threaded a set-screw 20, through the medium of which the matches may be adjusted in sucha man ner that their heads will project farther from or nearer to the side of the disk, or, in other words, the bores of the tubes may be lengthened or shortened, as desired.

At one side of disk 16 is secured to the casing a disk 21, having an opening through whichthe shaft 7 passes. The inner face of the disk is provided with a friction-surface 22, of emery or other gritty substance, and is op posite the match-disk 16, so that a series of matches mounted in the tubes will be successively ignited when the disk 16 is rotated by reason of their heads being drawn across the frictional surface of the disk 21.

Secured to the Wall of the casing is a box 23, having a filling 24:, of cotton or other absorbing material which is soaked in coal-oil or other illuminating fluid. In lieu of the box an ordinary lamp may be employed. The box is arranged in the path traveled by the head of the matches when the disk 16 is being rotated.

At the opposite end of the box, upon standards or posts 25 arranged opposite to each other, is a pair of alarm-bells 26, between which there occurs a slight space. Pivotally mounted upon a shaft 27, extending from the wall of the casing is a vibratory shaft or 1e ver 28, provided at one end and between the bells with a head or hammer 29.

In rear of the opposite end of the shaft upon a post 30, and in the same plane with the lever 28, is a wheel 31, the periphery of the wheel being toothed, as at 32, and the upper face of the wheel provided with a ring-gear 33, which is engaged by the pinion 10 of the shaft 7, which pinion serves to rotate the wheel 31. The peripheral teeth 32 of the said wheel are adapted to strike the inner end of the vibratory lever 28 and thus vibrate the same, said vibrations being continued by the teeth coming in successive contact, and furthermore by means of a pair of light coiled springs 34:, one being arranged at each side of the vibratory lever and serving to normally maintain the lever centrally between the bells. i

35 designates a pivoted pawl secured to the depending standard 5, which pawl at its free end engages the teeth of the escape-wheel 11, and is provided with an 7 eye 36, from which radiate a series of wires or cords leading to the various rooms of a house or to the several windows and doors of a room.

To operate the device the spring 15 is wound by means of the crank 8 and shaft 7, and as the shaft is wound it is maintained against a retrograde movement by means of the pivoted pawl 35 engaging the teeth of the ratchet or escape wheel 11. The cords 37, as before stated, each leads to a door or window and are of course guided over suitable pulleys or guide-eyes, so that by the opening of the window or door the cord connected therewith will be pulled, which serves to draw the pawl from mesh with the ratchet 11, thus liberating the shaft 7 and permitting the same to be rapidly rotated by the coiled spring 15. When thus rotated, it will be observed that motion will be imparted through the medium of the pinion 10 to the alarm-wheel 31, which wheel serves to vibrate the lever 28 in such a manner that the head 29 thereof alternately sounds the bells. For a considerable period of time after the spring has been exhausted the counterbalancing-springs 34: serve to continue the vibrations. As the shaft 7 is rotated the disk 16 is also rotated and the heads of the matches 19 are successively scraped or drawn across the friction-surface 22, and thus said matches are successively lighted or exploded. After passing over the wheel the ignited matches comein contact with the oilsaturated cotton or other inflammable material and the same is ignited, if not by the first match, by the second or third. Such ignition serves to illuminate the apartment, and in addition to the useful function of illuminating also serves to scare off a burglar.

From the above description it will be apparent that I have provided an exceedingly simple, cheap, and efficient burglar-alarm, the same being adapted to instantly sound the alarm the moment a window or door is opened to which it is connected and at the same time illuminate the apartment.

Having described my invention, what I claim is 1. In a burglar-alarm, the combination, with the casing, of a revoluble shaft, a disk provided with a match-receiving openin g mounted on the shaft and adapted to move therewith, a friction disk or surface arranged adjacent to the match-receiving disk, and a lamp or other illuminating device arranged adjacent to the match-disk, of aratchet-wheel mounted on the shaft, a pawl engaging ,the wheel, a coiled spring having one end rigid with the shaft, and a series of cords leading from the the shaft for operating the same, and a pawl" and ratchet located at one side of the frame, said pawl being provided with a series of liberating-cords, substantially as specified.

3. In aburglar-alarm, the combination,with the casing, a shaft journaled therein, amatchreceiving disk rigidly mounted on the shaft,

a friction-disk located adjacent thereto, and

an illuminating device located adjacent to the friction-disk, of a convolute spring having one end connected with the shaft and adapted to operate the san1e,a ratchet escape-wheel and a pinion mounted on the shaft, apivoted pawl engaging said ratchet-wheel and a series of cords connected with the pawl, a toothed wheel journaled at the end of the shaft and having a facial gear engaged by the pinion of the shaft, a pair of bells connected to the casing, and a vibratory alarm-lever pivoted between the bells and having its rear end arranged in the path of the teeth of the gear, subs'tan tially as specified.

4. In a burglar-alarm, the combination, with a match-disk and means for rotating the same, of a series of match-tubes mounted on the disk and adapted to adj ustably receive matches, and a fixed friction-disk arranged in the path of the tubes, substantially as specified.

5. In a burglar-alarm, the combination, with a shaft and means for rotating the same, and a disk mounted on the shaft and having aseries of openings, of match receiving tubes mounted in each of said openings, and adj usting-rods mounted in the rear ends of each of the tubes, and a friction-surface located in the path of the match-tubes, and a lamp or other illuminating device arranged adjacent to the disk and in the path of the matchtubes,sub- Y stantially as specified.

6. The combination, with the depending standard 5, having the post 12, provided with a bearing-opening 13, and the post 2, having an opening 4 located at one side of said standard, and the shaft 7,mounted in the bearing: openings, of the case 14, the convolute spring 15, the disk 20, provided with the match-receiving tubes, said disk beingrigidly mounted upon the shaft, the illuminating device 23, arranged in the path of the tubes, the frictiondisk 21, mounted upon the casing and pro- 75 pawl and adapted to be secured to a door or and the opposite coiled spring 24, arranged at the side of the lever 28, substantially as specified.

In testimony that I claim the foregoing as 13 my own I have hereto affixed my signature in presence of two witnesses.

CRAWFORD R. CANTERBURY.

Witnesses:

E. D. MCINTOSH, W. A. MCINTOSH.