US1529686A - Bandit trap for revolving doors - Google Patents

Description

March 17,1925. 1,529,686 L. F. BOHRER BANDIT TRAP FOR REVOLVING DOORS Filed Feb. 4, 1.924 2 Sheets-Sheet 1 March 17, 1925. v 1,529,686

L. F. BOHRER BANDIT TRAP FOR REVOLVING DOORS Filed Feb, 192.4 2 Sheets-Sheet 2 Patented Mar. 17, 1925.

UNITED STATES LOUIS F. BOHRER, on NORMAL, ILLINOIS.

'IBANDIT-TRAP FOR REVOLVING- DOORS.

Application filed February 4, 1924.

To all whom it may concern:

Be it known that I, LOUIS F. BQHRER, a citizen of the United States of America, and resident of Normal, in the county of McLean and State of Illinois, have invented certain new and useful Improvements in Bandit 'lraps for Revolving Doors, of which the following is a specification.

This invention relates to building struc-- tures, and particularly to inventions known as burglar traps, in which provision is made for preventing the escape of burglars who attempt to rob banking institutions or the like.

It is an object of this invention to provide means associated with the ordinary door of the ingress and egress of a counting room or banking room whereby at the will of the occupants of the buildingor room, the door may be rendered inoperative and held rigid and immovable so that the burglar cannot escape.

It is a further object of this invention to produce mechanism associated with a re volving door guarding such banking room whereby means for holding the door may be made operative by the manipulation of trip ping mechanism or the like, stationed at a distance from the door as, for instance, by the oflicers of the institution stationed back of the counters or windows so that if a burglar attempts to hold up the attendants, the door locking mechanism may be released to effect the securing of the door in order that the bandit may not escape.

It is a further object of this invention to produce a rotary door locking mechanism which can be installed in association with revolving doors now in common use, or which may be employed in connection with new revolving door installations.

It is a further object of this invention to produce a door retaining device, the mechanism of which is concealed and so located as to be inaccessible to those who might want to tamper with the mechanism to render it inoperative.

lVith the foregoing and other objects in view, the invention consists in the details of construction, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this application wherein like characters denote correspond Serial No. 690,553.

ing parts in the several views, and in which g Figure 1 illustrates a view in elevation of a door and the locking mechanism partly in section,- x

Figure 2 illustrates an enlarged detail view of the upper part of the structure shown in Fig. 1; W p

Figure 3 illustrates a top plan view of the door lockingmeohanism; p Y

Figure & illustrates a sectional view on the line 4- 1 of Fig. 1; and a Figure 5 illustrates a View" in elevation of trip operating mechanism. v i i In these drawings, 10 denotes a revolv ing door of any conventional type in which the spaces between the wings of the door at their upper ends are provided with guards 11 in order torender the structure thereabove invisible from" the doorway so that persons passing through the doorway will not observe the door locking mechanlsm, or gain access to it for the purpose of tampering with it to render it inoperative.

In the present embodiment of the invention, an apertured plate 12 is supported above the door, the apertures 13 of which are intended to receive bolts or rods 14 which are slidable in the apertures, and the plate 12 acts as a guide and a retaining device for the bolts when they are in position to engage the sides of the wings of the door above the shield 11.

The structure above the plate 12 may be provided to suit the requirements, but if there is a floor such as 15 above the plate, it can be provided with apertures such as 16, through which the bolts will reciprocate as they move up and down, as will presently appear.

The bolts have their upper ends anchored to a head 17, and in the present embodiment of the invention, the head is apertured to receive threaded portions of the bolts, and nuts 18 and 19 are threaded on the bolts above and below the head, respectively whereby thebolts are secured to the head so that as the head is moved up and down, the bolts will rise or fall and when they descend they are intended to pass below the upper edges of the wings of the door and retain the wings against movement.

As a means for operating the head, the central post 20 thereof has a link 21 pivotally connected to it, and the upper end of the link is pivoted to a lever 22 that is fulit,-leading to difierent pedals 29 shown here crumed .on a bracket 23 floor 15'." The lever extends radially of the head and operates in a guide 2 L that is stationed at one edge of the head, A .detent or dog 25 has one end pivoted in the guide and the opposite end BXtBIlClSriIltO' engage-;

ment with the lever 22 to holdit depressed at the outer end; a condition which results in ,suspendingthe, head and the bolts 1n order that the bolts will'be free of the up: per edges of the wings of the door during the normal operation of the door.

A flexibleelement 26 such as a cable may 'beconnected to the lower end of the detent and it'maymo-perate over'suitable pulley-s or guides-27 to distantpoints ,where branch cables or elements 28 may be connected to stations in order that different, operators may release l the door locking mechanism, should occasion require,

by pressing on pedals 29, one of which is secured to each of the branch cables-28: The are of vconventional type although any appropriate pedals -or trip actuating 1 devices may theselocations. A V

Fronian inspection of the drawing and from-"the foregoing descr ption, it will be supported on the be employed inv the apertures of or the wings'of the door from moving sov that the door eannotabe revolved'. When thi'soccurs, the doors will be held-to prevent the escape of the bandits andvthedevice wilLtherefore act as a trap.

I claim:

1. Ina bandititrap, a door section pivoted on a vertical axis and having wings inspaced relation to' each other, shields between the wings near their upper ends, an

apertured plate covering the-area occupied by the door when in normal- "position, a

guiding element thereabove having aper-= tui-es V alinin-g with the apertures of the plate,

' a head superimposed above theguidin g-ele ment and havlng downwardly projecting bolts guided in the apertures ofthe-guiding element and the saidpl'ate means i for 11o1dingthe head suspended, and means-tor tripping the pended,- i substantially asdescribed- In a bandit trap, a i-door section pivoted on a vertical-axis, anapertured plate position :to guard a passage, a gui-ding ele mentabove the apertured'plate in -spa'ced relation thereto' having I apertures alining with theapertures ofthe-platega head super-:

means for holding the head sus--- above the area occupied by the door when in imposedabove the guiding eleinent and hav V downwardly projectingbolts guided in :the guiding -element 7 and the said plate and adapted to project into: 1

" the path of; travel-o-f the (ilOOPSGOtiOIl, means for holdi'n'g thehead suspended, and means for trippingthe means for holding the .head suspended, substantiallyas described 1 LOUIS F. BOH'RERJ:

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