US1722457A - Burglar trap - Google Patents

Description

y 30, 1929- v. E. DAVIDSON 1,722,457

' sunema TRAP Filed Oct. 14,1926

INVENTOR. M ma 5 avidson.

ATTORNEY. I

Patented July 30,1929.

UNITED STATES ATE vEnNA n. DAVIDSON, or nnrnorr, MICHIGAN.

.nunernn TRAP.

Application filed october 14, 1926. Serial No. 141,481.

My invention relates to anew and useful termediate its ends, is a tube 19. The tube improvement in a burglar trap adapted for mounting upon buildings, particularly banks and the like, in which large sums of money or other valuables are present so that in the event of robbery those in charge in the building may operate the mechanism whereby the escape of the robbers or bandits may be prevented, while at the same time, the occupants of the building may be shielded from harm at the hands of the robbers. I It is an object of the invention to provide particularly a door closing mechanism whereby the door of the building and a 1 shielding door may be moved to closed position and held locked in closed position.

7 It is another object of the invention to providea mechanism-of this class which will be simple of structure, economical of manu- .facture, highly efficient in use, easily and quickly installed, and simple and positive in its operation. v 7

Other objects will appear hereinafter. The invention consists in the combination and arrangement of parts hereinafter described and claimed. I

The invention will be best understood by a reference to the accompanying drawings which form a part of this specification and in which,

' Fig. 1 is a fragmentary sectional view of a building showing the invention applied with parts broken away, parts in sideelevation, and parts in section.

Fig. 2 is a fragmentary sectional view taken on substantially line-22 of Fig. -1.

Fig. 3 is a vertical sectional view of a window shielding mechanism.

Fig. 4 is a sectional viewtaken on substantially line 44 of Fig. 3.

opening 13. A partition14 is shown dividing the room of the building into compart 'ments, a mouth piece 15 beingmounted in the partition 14 and a slide 16 being formed for a closure for the-opening 17. Projected through the partition 14 and lying parallel I to and spaced below the ceiling 10 is a tube V a 18, projecting downwardly from which, in-

Fig. 5 is a perspective View of the rockable 7 1S communicates atone end with a-housing 20 into which extends guide tube 21, slidably positioned in which is a weight 22 connecting by a cord 23 to a cord 24 whichpa-sses over a pulley 25 mounted in the housing 20 and connected to cord 26 which passes over the' pulley 27 mounted in the housing20. A cord 26 extends through the opening 28 in the floor and around the pulley 29 engaging the pulley 30,,and the pulley 31 passing upwardly throughthe o i 32 -M the floor 9- and extending around the drum whlch is suitably rotatably mounted behind the. partition 14 and above the floor 9.

The cord 26 may be attached at its ends to the drum 33 so that a rotation of the drum 33 m one direction will effecta winding of the cordthereon, and a rotation of the drum in the opposite direction will eflect an unwind- 'ing of the same. Secured at one end to the drum 33 so astobe wound or unwoundthereon and therefrom'upon rotation of thesame 1s a cord 34 which extends around the pulley 35 and throughthe tube 18 downward- 1y in the housing 20, and through an opening formed in the guide tube 21 so as to connect to'the lower'end of the weight 22. The cord 24 passes over a pulley 36 and eXtendsdownwardly in the guide tube 19 into a housing 37 which is builtaround the window opening 13, this housing 37 having an opening 38 formedtherein, Slidingpanels 39 and I 40 areadapted for movement across theopening 38 so as to close this opening the cord 24 terminating initwo cords 41 and-42, each cord 41 passes around the pulley .44fandis connected at its end to a lug 45 formed on 'of which passes around the pulley 43. The

47 formed .on the panel 40. .The panel 39 is provided with rollers 49 which engage the partition50. The panel 40 is provided with rollers 48. which also engage the upper surface of the partition 50. Partition members 51 and '52 are formed in the housing .37 to provide a runway for rollers which are mounted on the lower ends of the panels 39 and 40. Projecting downwardly from the panel 39 is a lug 53 to which is connected one end of a cord 54 which connects to the 26 as shown in Fig. 1. Connected to a lug 56 extending downwardly from the panel 40 .cord 55, this cord 55 connecting to thecord is a cord 57 which also connects to the cord 55, these cords 54 and 57 passing around the pulley 58.

Mounted in the housing on a vertically extending support 59 is a shaft 60 projecting from one end of which is an arm 61. Projecting from the other end of the shaft 60 and non-parallel to the arm 61 is an arm 62, the outer end 63 of which is formed slightly enlarged and preferably longitudinal. The arm 61 is connected, as shown in Fig. 1, to the cord 26, the housing 20 being provided with a slot 64 in its side wall 65 for permittmgthe passage of the arm 62 exterior of the housing.

' door 66 is swingably mounted on the wall 11 as a closure for the opening12, this door 66 being provided with an abutment 67 mount- 7 'ed thereon. Swingably mounted is an auxiliary door 68 which is adapted to close over the door 66 to provide a further closure for the opening 12 and prevent access to the door 66 from the interior of the building. The

door68 is provided with a housing 69 open at one side, so arranged that upon a rocking of the arm 62 from the dotted position shown in Fig. 1 to the position shown in full lines in Fig. 1 to move the door 68 into closed position, the portion 63. of the arm 62 riding in engagement with the inner surface of the door and striking the lower wall 70 of the housing. 30

The drum 33 is provided with a. ratchet wheel 71 adapted to rotate with the drum, this ratchet wheel being provided with teeth for engaging the electrically operated pawl or dog72, a spring 73 serving normally to retain this pawl or dog 1n engagement with the teeth of the ratchet wheel 71. Carried by the drum 33 at the opposite side thereof is a ratchet wheel 74 engaging the dog 75 which is normally in engagement with the teeth of the ratchet wheel 74, the teeth in the ratchet wheel 74 being oppositely faced from the v V the teeth in the ratchet wheel 71 so that the pawl 75 prevents rotation of the drum in one directionand the pawl 72 prevents rotation of thedrum in theopposite direction. In operation the weight 22 would normally be raised. to the elevated position shown in dotted lines in Fig. 1, this moving the arms 61 and 62 into the position shown in dotted lines,

permitting the opening of the doors 68 and 67 into the position shown in 2. The cords .34 and 26 would then be wound on the drum,

the dog 72 preventing an unwinding of the cords so as to retain the weight in elevated po- I sition. To release the dog 72 I have provided an electrically operated latch mechanism, the

. detail of structure of which is not shown as it is of a well-known type and forms no specific part of the presentinvention. This latch mechanism is connected by the wires-76to a press button switch 77 so that a person behind the partition 14 may, by closing the switch 77, release the dog 7 2 and permit a movement of the weight 22 downwardly in the guide tube 21. Upon this movement the cords 34 and 26 ratchet wheel 74.

' In this way Ihave provided asim'ple mech anism for closing and positively locking the.

auxiliary door 68 in guarded position. At

the same time that the door 68 moves'into closing position the panels 39 and 40 will be drawn across the opening 38 by means of the cords 54 and 57. In the reverse operation'the cords 41 and 42 would move the operative'position. p

While I'have'illustrated and described the preferred form of invention, I do not wish to limit myselfto the precise form of structure shown, but desiret'o avail myself of such .va-

panelsto in- I riations and modifications as may come with-' in the scope of the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. A device of the class described adapted for use with a swinga ble door, comprising: a rockably mounted shaft; an arm projecting radially outwardly. from one endzof said shaft; an arm projecting radially outwardly I from the opposite endof said. shaft non parallel to said first mentioned' arm, and

adapted, upon rocking of said shaft, for engaging sa1d door, and in rocking from one position to the other, for forcing said door into closed position; means connected to the other arm for rocking said shaft; and means on sa1d door fo'r'engagmg sa d second mentioned arm and l mlting rocking movement of said shaft in one direction beyond a predetermined degree. I

2. A device of the class described adapted for use with a swingably mounted door, com prising: a rockably'mounted shaft; an-arm projecting radially outwardly from one end wardly from the opposite endof said shaft non-parallel to said first mentioned arm; 'a wear plate on theface ofsaid door; an abutof said shaft; an arm projecting radially outment member on said wear plate, said second mentioned arm adapted, upon rocking 0f said shaftin 'onedirection, for riding over saidwear plate and forcing said door to closed position, the engagement of said door with said abutment-member limiting rocking movement of said shaft in said direction.

3. A device of the class described adapted for usewith a swingably mounted door, com

prising: a rockably mounted shaft an arm projecting radially outwardly from one end wardly from the opposite end'of said shaft of said shaft an arm projecting radially outi non-parallel to said first mentioned arm; a ment of said shaft in said direction; a flexible wear plate on the face of said door; an abutmember secured to said first mentioned arm; 10 ment member on said Wear plate, said second and a Weight for moving said flexible memmentioned arm adapted, upon rocking of said her and rocking said shaft in one direction. shaft in one direction, for riding over said In testimony whereof I have signed the wear plate and forcing said door to closed poforegoing.

sition, the engagement of said door with said abutment member limiting rocking move- VERNA E. DAVIDSON.

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