US 407327 A
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Description (OCR text may contain errors)
0. E. BUELL.
No. 407,827. Patented'July 23, 1889.
OKW 6W 64K W UNITED STATES PATENT OFFICE.
CHARLES E. BUELIJ, OF NEIVARK, NEIV JERSEY.
SPECIFICATION forming part of Letters Patent No. 407,327, dated July 23, 1889. Application filed February 18, 1889. $erial No. 300,266- (No model.)
To all whom it may concern/.-
Be it known that I, CHARLES E. BUELL, of Newark, Essex county, State of New Jersey, have invented Improvements in Electrical Generators, of which the following is a specifioation.
My invention relates to the class of dynamoelectric machines that accumulate a charge to be sent to a circuit as a defiagrating-charge for firing fuses, in blasting, and for other purposes where a quantity-discharge of brief duration is desired.
My invention consists of a generator comprising a spring-actuated armature and a con- (lensing-circuit formed by the movable parts of the apparatus, that are in such relation to each other as to be electrically connected during the time of accumulation and to become electrically separated at the desired moment in the process of accumulation, substantially as hereinafter described.
My invention further consists in the com bination, with a dynamo or magneto electric machine, of a spring-actuated armature that comprises a releasing device that in its normal operation will trip the armature-actuating mechanism at a predetermined point in the process of winding, substantially as here inafter described.
My invention further consists in sub-combinations to be hereinafter described.
In the accompanying drawings, Figure 1 is a view in side elevation of an apparatus embodying my invention. 2 is a plan view of the same, and Figs. 3 and at show details of my invention.
Referring to these drawings, the letter A represents a dynamo-electric machine insulated upon a base at I.
O is a toothed rack-bar in the form of a sector, that is rigidly secured upon an arbor mounted in the base of the dynamo below the insulation I. On the same arbor with sector C is a notched wheel D and a handle 71., the said wheel D being rigid upon the sector-arbor and the handle 71. being mounted loose thereon. A spring E is secured to the wheel D and to the board or plate upon which the apparatus is placed. A latch or hook 6 upon the handle h catches into the notch in wheel D when the lover or handle h is in the position shown, being pressed down by the small spring 6, the said latch 6 being pivoted on the side of the lever h.
The sector C when in the position shown is not electrically connected to the dynamo, but when the lever h is thrown to the right it moves with it the wheel D and sector 0, and the teeth of the sector interlock with the teeth of the small pinion B on the armature-shaft, and while said sector and said pinion B are interlocked they electrically connect the dynamo with its insulated base.
The circuit of the dynamo is over wires 1 and 2 to the binding-posts b b, and from them to the fuses to be fired, or to other devices to be operated on by the discharge. From wires 1 and 2 branch 4 leads to or is electrically connected with pinion B, and branch 3 is electrically connected to the sector 0, so that when said pinion and sector are interlocked they complete a condensing-circuit, and as they separate when the sector is in the position shown the condensing-circuit thus formed is ruptured, so that by insulating the parts named the condensing-circuit can be composed of the moving parts of the apparatus and the greatest durability reached as compared with those dynamos heretofore used that depend upon the opening of a circuit-controlling key by the impingement of a rack bar that is descending with great force, or upon a spring that is in contact with the moving parts of the apparatus, and requires to be alight spring to prevent its retarding the moving of the parts, and is therefore easily displaced, worn, and broken.
The sector 0 is provided with a plate 0", that comes in contact with a rubber block R, and as the spring E is under tension even when the sector is in the position shown the rebound of the sector is prevented, while the moving part is brought to rest without shock.
The spring E should be a spring that does not create friction in unwinding by having its convolutions touch each other when wound up, as the unwinding will be irregular and of varyin g force and the discharge unreliable.
The open form of coiled spring shown is satisfactory; but a spring coiled upon the sector-arbor will do; or the Scctor-arbor may be the spring bysecuringoi'icot its ends from turning.
The lever 71 is preferably detachable for convenience in carrying and to prevent unauthorized persons ifrom using the apparatus. F01 this purpose the lever 71 is removably connected at 71.
A postf is rigidly attached to the support or base of the apparatus and in such relation to the latch c that when the lever 71/ is moved to the right that portion of the latch c between the lever h and the notch in the wheel I) comes in contact with said post 1" in a manner to lift the latch c and raise the hook out oi. the notch.
The operation oi? the apparatus is as follows: The lever or handle 72 is moved from the position shown to the right until the hook 0, coming in contact with the post f, is lifted out of the notch in wheel I), when the sector, which has been carried over with handle 71, is released, and by the wound-up spring 15 is quickly returned to the position shown in the drawings, and in returning rapidly revolves the armature by interlocking with the pinion .ll. The lever is prevented from. going beyond adesired point after the hook cis disconnected from wheel D by: the post g, which intercepts it. \Vhen the sector 0 is being moved to the right and the spring E is being wound, the armature is turned in an opposite direction from that in which it turns in the process of an accumulation of charge; but the turning of the arimtturc in the operation of winding is so slow that no current developed to change or disturb the normal po larity of the dynamo.
In Fig. 3 the apparatus shown covered to exclude dirt and drip from the moving parts. A strap or handle (not shown) is provided for carrying the apparatus.
In Fig. st there is shown a lamp in a loop or branch and a switch for connecting the dynamo alternately to the lamp and to the exterior or tiring circuit, for the purpose of iirst testing the apparatus before use by dischz'n-ging through the lamp l), and then turning the switch to contact with the terminal of wire 2 connect the dynamo in the tiring circuit. Theadditionot a switch 1/; For testing is novel. and of practical. consequence, as the knowledge of the [act that the apparatus has become out of? order in shipping is oi. great importance and before discharging it into a line ot fuses, tor a failure oi? a part of the [uses on account of an insui'ticicnt dis charge of electricity is followed by danger and an apprehension of danger by those who ,are required to work around the loaded holes after such a failure.
The advantages oi? a spring-actmti ed armature, when. ri'omprising a spring that has no friction between its convolutions and, at the completion of its motion, is under tension, are
that the discharges produced are every time alike in their lightgiving and deilagrating force-a result never bel'ore reached by any lltllltl-OpOl'tttQd or spring-aetuatedv generator for sending an accumulated charg. or tiring fuses or other purposes where a discharge oi. brieif duration desired. vBesides the regularity ol the discharges, the maximum product is reached by the employment; oi? the moving parts to form the condensirig-circuit, as the contact is iirm and the conductivityoi' the parts great, while the siniaration of lhe parts is accomplished in an instant oi? time at the proper moment, and they are widely separatm'l, all of. which resul is iltvorably,
The form oi. a maraii us shown is cheaply constructed and is the prei'errod. arrangement; but details may vary wiihou depariing from my invention.
Nhat I claim is 1. An electrical gtnnn-aior comprising an exterior circuit and a condensing-cirouii, gears for actuating the same, and electrical connections with said gears, the said gears being adapted to .iirstcomplete the condensingcircuit and then break: said circuit, whereby said generator is caused to discharge into the said exterior circuit.
2. An electrical generator comprising as iringactuatcd armature and a (.iondensingcircuit, a spring and gears for actuating said generator, and elect rieal connections with said gears, the said gears being adapted to iirst complete the condensing-circuii; and allow ward. brealc said circuit, wlmreby the generator is caused to discharge into the exterior circuit.
33. The combination, with a generator, of a spring-actnated. armature and a winding-up handle or device that is ')roviih. d with an an tomatic releasing contact or device, whereby thewonnduparmature-aetuatingmechanism is tripped at a predetermined point in the process of winding.
:l. The combination, with a dynamo or magneto electric machine that is provii hid with a firing-circuit and a condensingcircuit that is completed by the movable parts oi' the ap paratus, as described, oi a spririg-actuatorl armature that is provided with an automatic releasing device that in. its normal operation trips the arn1ature-actilating IIIOLdHlIIiSIIl at a ln'edetermined point in the winding, the whole arranged and. operating substantially as di scribed.
An electric generator that comprises an exteriorcircuit,aci mlensing-circuii,aspringactuated. armatl'ire, gears l'or actuating said armature, electrical connections with. said gears, and a winding handle or device that is n'ovided with a releasing-conhict, whereby the wound-up mechanism can be released in the process oi? winding and the eomlensingcircuit opcncd at the desired moment by the moving parts of the apparai us.
6. In an electrical generator the eombina- Signed before Witnesses this 15th day of tion, with a spring-actuated armature that is February, 1889. automatically released at a predetermined p p r CHARLES E. BUELL. polnt 1n the W1nd1ng,0f a eondensmg-elremt 5 that is opened at the desired moment in the \Vitnesses:
process of acemnulation bylzhe moving parts A. C. BUELL,
of the apparatus. A. H. ORUMP.