US843621A - Electric timing device. - Google Patents

Description

No. 848,621. PATENTED FEB. 12, 1907. H. H. MQINTIRE.

ELECTRIC TIMING DEVICE.

APPLICATION FILED MAR. 29, 1904.

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UNITED STATES PATENT OFFICE.

HERVEY H. MoINTIRE, or SOUTH BEND, INDIANA.

ELECTRIC TIMING DEVICE.

To all whom, it may concern;

Be it known that I, HERVEY H. MCINTIRE,

a citizen of the United States, residing at South Bend, in the county of St. Joseph and State of Indiana, have invented certain new and useful Improvements in Timing Devices;

- and I do hereby declare the following to be a full, clear, and exact-description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. l

This invention relates to a timing device, and is more es ecially adapted for use in connectionwithpffotographic-printing machines, and has for its object to provide means for sigrilaling certain, units of division of time w ch may be predetermined, so as to indi-' cate the exact time of exposure for each print.

connection between the switch and contact member to operate an electric bell, annunciator, or other means for bringing auricular notice of the contact.

The invention further consists in the construction, combination, and operative aggroupment of parts, all as will be more fully described hereinafter, illustrated in the accompanying drawings, and finally pointed out in the appended claims.

In the drawings, Figure 1 is a plan View of the device with a portion of the motor-driven contact member shown in section and with the side and end walls of the case shown in section. Fig. 2 is a front elevation with the front of the case broken away to expose the I operating mechanism of the device.

Making renewed reference to the drawings, 1 designates a case, which incloses the operating mechanism of the timin device. Mounted in the case is motor 2, whic is of any suitable type'and which is adapted to im art a continuous rotary motion to a shaft 3, t ere being a suitable means connected with the motor for maintaining a uniform speed of rotation of the shaft.

Specification of Letters Patent.

Application filed March 29, 1904. Serial No. 200 64.2.

Patented Feb. 12, 1907.

Rigidly secured upon the end of the shaft 3, and preferably by an insulated connection, is a contact member 4, which consists'of the circular disk having a flanged rim 5. This" contact member or disk is preferably disposed vertically within its case. Upon the outer face and inclosed by the annular flange 5 is an insulator pad or block 6. Secured to the disk and projecting from the front face thereof through the insulating pad or block are a plurality of contact-pins 7, Which are arranged in annular rows therearound, and the pins of each row are speacd at equal distances apart; but each row contains a-different number of pins, so that the distance between the pins of each succeeding row increases from the periphery toward the center of the disk and the number of pins in each row decreases.

Secured to the front of the case on the inside thereof is a bracket 8, in which is pivoted, as by a pin 9, a combined switch and indicator 10, which consists of an arm, the lower endof which carries a contact-pin 11, which projects toward the disk and in the path of the contactin 7 carried thereby, and this portion of t e arm constitutes a switch to make or break an electric currentbetween the arm and the disk. That portion of the arm which projects above its fulcrum is formed into a pointer or indicator 12, which is offset, as at. 13. The offset portion extends through a slot 14 in the front of the case and is provided with a knob 15 to facilitate the manipulation thereof. Since the arm has a fixed pivot, the ends thereof will oscillate, and for this urpose the slot 14 is curved to conform to t e are described by the offset portion of the arm.

Above the slot on the outside of the case is a scale 16, on which are characters which indicate the time that will elapse between each into alinement with the row of pins having tlfe required spaces therebetween to register the proper interval of time on the indicator.

Pivoted between two ears 17 in the bottom of the case is a contact-lever 18, the outer end of which is weighted, as at 19, to hold the inner end thereof into engagement with the periphery or flanged rim of the disk.

The contact-pin 1 1 in the end of the switch arm is provided with a thumb-nut 20, which may serve as a binding-post for an electric conductor A, which is connected with to another binding-post 21 of an electric bell 22 in the usual manner. Secured to the conseaeai Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1'. In a device of the class described, the combination of a rotary disk having rows of contact-pins arranged therearound, a pivoted member having one end arranged to engage the contact-pins and constituting one terminal of an electric circuit and its other end formed into a pointer, a contact member permanently held in contact with the periphtact-lever 18 is an electric conductor B, which ery of the disk and constituting the other ter is connected to one of the electrodes 23 of a minal of the circuit, and an alarm included in battery jar or cell X, the other electrode of the circuit, substantially as specified.

5D the battery being connected with bindingpost 21 by a conductor C, so that when contact-pin 11, carried by the switch, is engaged with the contact-pins 7 of the disk the circuit will be closed and the bell will ring to indizo cate that the contact was made. Instead of the bell shown in the drawings any suitable annunciator or signaling device may be employed, since the sole object of the same is to bring auricular notice that the contact has 2 5 been made.

Assuming that the motor ,2 drives the contact member or disk 4 at such a speed as to give it one rotation every minute and the indicator 12 is set on the scale opposite the nu- 0 meral 2 at one end thereof, the switch end of the arm, with its contact-pin 11, will be in the path of the outer row of pins, and assuming that this outer row contains thirty pins which are spaced apart equal distances the contact will occur every two seconds, and therefore the bell will be rung thirty times during the one revolution of the disk. Obviously the indicator may be moved to change and predetermine the period of time between each contact and annunciation, and in Fig. 2 the combined indicator and switch is shown in dotted lines as being set to annunciate once in every rotation of the disk or once every minute. In this respect it will be noted that the combined switch and indicator is fixed with relationto any particular row of pins carried by the contact member 4, but movable relatively to the latter to change the time between the contacts and the annunciation thereof. In this way the operator may set the indicator at the lowest point on the scale, watch the printing of a picture,

and count the number of sounds of the bell,

and when he has determined the time necessary for the exposure he may set the indicator to that point at which only one annunciation is necessary to notify him of the exposure 2. Means for signaling or measuring certain units or divisions of time of a predetermined period embodying a continuously-- driven member having contact-pins spaced apart at equal distance thereon, a switch movable relatively to the contact-points of the continuously-driven member and adapted to engage therewith, an indicator on one end of the switch to adjust the latter and vary the periodv of contact between the switch and the contact-pins of the continuously-driven member, a scale, over which the indicator moves, having characters to indicate the number of units of time that elapse between the contacts, a contact member constantly held engaged with the disk, an an nunciator, and an electric connection for the switch, the .annunciator and the last-mentioned contact member.

3. Means for signaling or measuring certain units or divisions of time of a predetermined period embodying a continuouslydriven disk having contact-pins projecting from the face thereof and also having an insulating pad or block through which the pins project, a pivoted arm having a contact-pin in its lower end to constitute a switch and its upper end formed into an indicator and constituting a means for adjusting the switch with relation to the contact-pins on the disk, a scale, over which the indicator moves, having characters to indicate the number of units of time that elapse between the contacts, a weighted contact-lever constantly en aged with the disk, an annunciator, and electrical connections for the switch, the annunciator and the weighted contact-lever, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

'HERVEY H. MCINTIRE.

Witnesses:

, GEORGE Ourson,

' HUGO Queen.

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