The Ensign-bickford Company

Stephen W Bartholomew

William J Necker

Daniel C Rontey

Craig F Adams

Clifford N Kaiser

Richard J Michna

Richard J Peebles

David E Monat

A transmission tube initiator comprises a body having a passageway formed therein for receiving and retaining an initiator charge. A holder holds a side of a transmission tube in close proximity to the charge. The charge provides an initiation signal which penetrates the transmission tube and initiates a reactive substance contained in the transmission tube.

Initiator for a transmission tube

A connector for a nondestructing blasting signal transmission tube including a housing; for engaging the extensions of at least two signal transmission tubes in adjacent relationship, the housing serving to establish a signal path permitting direct signal communication between openings in the adjacent portions of the signal transmission tubes. Preferably the connector includes a suitable device for cutting the adjacent portions of at least one of the signal transmission tubes to expose a portion of the reactive interior of the tube. Also, a method of connecting at least two signal transmission tubes by securing portions of the signal transmission tube in adjacent relationship to another; establishing a signal path between the adjacent portions of the signal transmission tubes; and cutting each of the adjacent signal transmission tubes to expose a sufficient portion of the interior of the tubes to permit direct signal communication between each of the tubes.

Blasting signal transmission tube connector

A transmission tube signal delay assembly comprising a delay element containing a shaped delay composition having a preselected combustion time from a first side of the delay element to a second side of the delay element; a first transition element adjacent to the delay element at the first side for transferring a transmission tube signal to the delay element; and a second transition element adjacent to the delay element at the second side for transferring a signal from the delay element to a transmission tube, each of the transition elements comprising a shaped transition composition. Also, a method for delaying a transmission tube signal delay unit having a housing with a plurality of openings for receiving portions of signal transmission tube having interior-exposing opening means for securing the signal transmission tubes in the housing openings; and the signal delay assembly mounted in the housing with each of the transition elements positioned between the delay element and one of the housing openings for transferring a signal between the delay element and each of the signal transmission tubes.

Blasting signal transmission tube delay unit

A combination signal transmission tube connector and delay assembly having a housing; means on the housing for engaging at least one signal transmission tube; means on the housing for cutting the transmission tube to expose at least two transmission tube interior portions; a signal delay assembly mounted in the housing for interposition between exposed transmission tube interior portions; and means on the housing for establishing a signal path permitting signal communication between the delay assembly and exposed transmission tube interior portions. The delay assembly preferably has a delay element containing a shaped composition having a preselected combustion time from one side of said element to another side of said element; and at least two transition elements adjacent to the delay element for transferring a signal between the delay element and exposed transmission tube interior portions, each of the transition elements containing a shaped transition composition.

Combination blasting signal transmission tube connector and delay

A detonating cord signal delay connector having a housing; means on the housing for engaging a first detonating cord end and a second detonating cord end; a signal delay assembly in the housing for connection between the first detonating cord end and the second detonating cord end, the signal delay assembly being operable to delay a detonating signal between the detonating cord first and second ends; and gripping means for securing the detonating cord first and second ends in the housing to prevent removal of the ends before signal delay operation of the connector. The preferred embodiment of the connector further includes means on the housing for severing detonating cord to produce the detonating cord first and second ends. The preferred embodiment of the delay assembly comprises a signal transmission tube in the housing having a first end and a second end, the first transmission tube end being adapted for signal receiving connection with the first detonating cord end; and a delay explosive train mounted in the housing and having a signal input end, a signal output end, and a preselected combustion time between the signal input and output ends, the signal input end being connected to the signal transmission tube second end, the signal output end being adapted for connection with the second detonating cord end.

Growing community of inventors

Granby, CT, United States of America

Stephen W Bartholomew