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Publication numberUS458180 A
Publication typeGrant
Publication dateAug 25, 1891
Publication numberUS 458180 A, US 458180A, US-A-458180, US458180 A, US458180A
InventorsThomas Lyons
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Thomas lyons
US 458180 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.) A y k 2 sheetssheet i. T.'LYONS. DOOR BOLT.

No. 458,180. Patented Aug; 25, 18911,v

W72 62am@ @57W (No Model.) Y I zsh'eetsv-Sneet 2.



'N0.45a,18o. Patented Aug. 25, 1891.




SPECIFICATION' forming part of Letters Patent No. 458,180, dated August 25, 1891.

Application filed June 6,1891. Serial No. 395,342. (No model.) v

To a/ZZ whom, t rmty concern.-

Be it known that I, THOMAS LYoNs, a citizen of the United States, residing at New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Door-Bolts, of which the following is a specification.

My invention relates to improvements in door-bolts; and the objects of my improvero ment are Jto/,specially adapt the bolt for use in a vertical position, to simplify the construction, and, in general, to improve the efficiency and convenience of the bolt, while at the same time it can be produced at a small cost.

In the accompanying drawings, Figure 1 is a front elevation of my bolt. Fig. 2 is avertical section of the same, partly in elevation, on line a: a; of Fig. 1. Fig. 3 is a horizontal 2o section on line y 'y of Fig. 1; and Fig. 4 is a front elevation, on a smaller scale, of two connected bolts.

A designates the base-plate having barrels or bearings 4 for supporting and guiding the bolt 5, and B designates the base-plate of the keeper having the barrel or socket 6 for the end of the bolt 5 to engage, as in ordinary door-bolts. I form the barrels or bearings 4 immediately opposite open spaces in the base- Y 3o plate in order to enable them to be castintegral therewith, and by reason of which they bear only upon the front. side of the bolt 5. At the upper and lower ends of the base-plate A, when in the position illustrated, and out- 5 5 side of the barrels et, I form lugs 7 with slightly-rounded depressions to form bearings for the opposite side of the bolt 5, as shown most clearly in Fig. 2. This enables the baseplate and the proper bearings for supporting 4.o and guiding the bolt 5 to be cast integral. i In the middle of the base-plate I form a pair of opposing shoulders S 9, the same extending obliquely across the base-plate, and, as shown, they form the side walls of an oblique slot; but two opposing points is all that is essential.

10 designates a sleeve or collar secured to the bolt 5 in any proper manner, so as to be rigid therewith-as, for instance, by means 5o of the pin 11--said sleeve being provided with a spiral web 12, that extends between and 1s engaged by the opposing shoulders S and 9 in the base-plate. Said sleeve may also be provided with au operating-handle 13, as shown in Fig. 1, whereby the said handle and 5 5` web are rigidly connected with the bolt.

The barrels t are recessed in their middle portion, as shown in Figs. 2 and 3, and in the recessed portion of the barrel nearest the keeper I place a plate-spring 14 to bear upon 6o the bolt with friction enoughV to prevent its accidental rotation. If desired, a spring may also be inserted in the other barrel.

The base-plate A and the bearings for the bolt may be cast integral in the form shown.

The sleeve, knob, and spline may also be cast in like manner and drilled'to receive the bolt 5. The spring 14 may be formed simply as a fiat spring, or, if desired, slightly curved before insertion. The spring is placed in its 7c barrel and the bolt inserted through the barrels and sleeve 11, after which irmly securing the sleeve to the barrel completes the article. i

The bolt may be used in avertical position at the bottom or top of a door. By turning the handle 13 a half-revolution the spiral web and confronting shoulders of the baseplate cause the bolt when so turned to move longitudinally for projecting its end in or out 8o for engagement or disengagement with the keeper. The spring 14 causes sufficient friction to make the bolt stay in the position in which it is set, and by the construction shown the bolt operates the same and works equally 8 5. well whether it is placed at the top or bottom of the door, and which is not the case with a bolt that slides out and in by a direct push. While adapted for use in a vertical position it may of course be used in a horizontal posi- 9o tion in place of an ordinary door-bolt. Fur-. thermore, two bolts, one having a right-hand spiral web and the other a left-hand one, may

be placed at the top and bottom, respectively,

of a door and connected together for simul- V taneous operation. Such an application of two bolts is illustrated in Fig. et. In this construction the operating-handle on the sleeve maybe dispensed with and an arm 15 rigidly connected to the confronting end'of the top roo and bottom bolts 5 5. These arms are connected by a connecting-rod 16 in any proper manner-as, for instance, by screwing one end of said rod into a threaded hole in one of the arms 15 (the lower one as shown) and let the other end of said rod pass loosely through a hole in the other arm, as shown. The operating-handle 13 may be connected to said rod, or the rod itself may Yserve as a handle, as may be desired.

The bolts are set in alignment with each other at the top and bottom of the door and connected bythe rod 16, which may be longer or shorter, according to the height of the door. If the rod is too long, the portion that projects above the arm 15 of the upper bolt, when both bolts are forced out of their case, as shown in Fig. 4, may be cut o. It will readily be seen that turning the one handle 13 on the rod 16 in the manner beforedescribed for a single bolt will simultaneously operate both bolts, that end of the connecting-rod which is loosely connected with one` of the arms 15 permitting of the necessary sliding movement to compensate for the bolts 5 5 moving in opposite directions up and down.

I claim as my inventionf 1. The herein-described door-bolt, consisting of a suitable case or supporthaving opposing shoulders 8 9, the bolt 5, mounted in said case and provided with the spiral Web 12, and operating-handle rigidly connected with said bolt, substantally as described, and for the purpose specified.

2. The herein-described door-bolt, consisting of a suitable case having recessed barrels and opposin g shoulders 8 9, the bolt 5, mounted in said case, the spiral Web and operatinghandle rigidly connected with said bolt, and a plate-spring inclosed Within said recessed barrel in contact with said bolt, substantially as described, and for therpurpose specified.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6697589Mar 12, 2001Feb 24, 2004Lexmark International, Inc.Fuser latch system
US7331616 *Jul 15, 2004Feb 19, 2008General Motors CorporationHood latch assemblies utilizing active materials and methods of use
US20060012191 *Jul 15, 2004Jan 19, 2006Diann BreiHood latch assemblies utilizing active materials and methods of use
Cooperative ClassificationE05B83/10