US738333A - Contact-maker for electrical signs. - Google Patents

Contact-maker for electrical signs. Download PDF

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Publication number
US738333A
US738333A US12795602A US1902127956A US738333A US 738333 A US738333 A US 738333A US 12795602 A US12795602 A US 12795602A US 1902127956 A US1902127956 A US 1902127956A US 738333 A US738333 A US 738333A
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United States
Prior art keywords
contact
maker
cam
post
disks
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US12795602A
Inventor
Conrad F Lancaster
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Individual
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Priority to US12795602A priority Critical patent/US738333A/en
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Publication of US738333A publication Critical patent/US738333A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/02—Advancing or retarding ignition; Control therefor non-automatically; dependent on position of personal controls of engine, e.g. throttle position
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • My invention relates to contact-makers for changeable signs, and has for its object to provide an improved form of a contact-maker which can be readily adjusted for a particular sign without requiring the services of an electrician.
  • Figure 1 is a perspective of my device.
  • Fig. 2 is a side view of one of my cams.
  • Fig. 3 is a similar view of another form of cam.
  • Fig. 4 is a partly-sectional detail of my contactcup.
  • the numeral 1 indicates the casing for my clockwork, which it is not deemed necessary to show, as any ordinary form may be used.
  • a stem 2 having its outer end threaded and provided with a nut, while a shoulder is formed near the case 1.
  • This stem is attached to the clockwork and revolves when the same is set in motion.
  • Disks 3, having cam portions 4. formed thereon, are held on the stem 2 between the aforesaid shoulder and nut,the latter being screwed up tightly when it is desired to prevent their movement on the stem.
  • each one of the cam-disks is set a post 5. of clearness in the drawingsI have here shown but one of these posts; but it is obvious that there may be as many as desired.
  • Each post carries a spring-pressed lever 6, one-end of which is in contact with its cam-disk.
  • the opposite end of the lever carries a plunger 7, which passes through an insulating-bushing 8 into the cup 9, the latter being partly filled with mercury, as shown. It is obvious that the motion of the cam-disk will move the lever and cause the plunger to rise and fall in the cup.
  • Both cup and plunger are made of some good electrical conductor.
  • Aplate 10, provided with a binding-post 11, is connected with a battery 12 by means of a wire 13.
  • insulated bushing 8 has a binding-post 14 For the sake mounted thereon, the end of said post contacting with the said plunger.
  • a wire 15 leads from the binding-post 14 to the battery 12.
  • One of these wires passes through whatever lights it is desired to affect by means of the especial cam selected. It now becomes plain that when the clockwork is in motion the cam-disks are rotated and the electric circuit is completed by the plunger dipping into the mercury. It is obvious that the circuit will remain closed as long as the lever is in contact with the cam portion of the disks. I can thus arrange the length of these portions to suit any desired exposure of light. It will also be plain that I can arrange the disks upon the stem in any desired manner and can make such changes in that arrangement as from time to time I may deem advisable without it being necessary to disturb the wiring.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Description

N0."738,333. PATENTED SEPT. 8, 1903.
C. F. LANCASTER.
CONTACT MAKER FOR ELECTRICAL SIGNS.
APPLICATION FILED OCT. 20. 1902.
N0 MODEL.
' UNITED STATES.
Patented September 8, 1903.
PATENT OFFICE.
CONTACT-MAKER FOR ELECTRICAL SIGNS.
SPECIFICATION forming part of Letters Patent NO, 73S,333, dated September 8, 1903.
' Application filed October 20,1902. Serial No. 127,956. (No model.)
To aZZ whom it may concern.-
Be it known that I, CONRAD F. LANCASTER, a citizen of the United States, residing at East Liverpool, in the county of Oolumbiana and State of Ohio, have invented a new and useful Improvement in Contact-Makers for Changeable Signs, of which improvement the following is a specification.
My invention relates to contact-makers for changeable signs, and has for its object to provide an improved form of a contact-maker which can be readily adjusted for a particular sign without requiring the services of an electrician.
My invention consists of the novel forms and arrangement of parts as hereinafter fully described and claimed.
Throughout the drawings like characters of reference refer to like parts.
Figure 1 is a perspective of my device. Fig. 2 is a side view of one of my cams. Fig. 3 is a similar view of another form of cam. Fig. 4 is a partly-sectional detail of my contactcup.
The numeral 1 indicates the casing for my clockwork, which it is not deemed necessary to show, as any ordinary form may be used. From the casing projects a stem 2, having its outer end threaded and provided with a nut, while a shoulder is formed near the case 1. This stem is attached to the clockwork and revolves when the same is set in motion. Disks 3, having cam portions 4. formed thereon, are held on the stem 2 between the aforesaid shoulder and nut,the latter being screwed up tightly when it is desired to prevent their movement on the stem. Opposite each one of the cam-disks is set a post 5. of clearness in the drawingsI have here shown but one of these posts; but it is obvious that there may be as many as desired. Each post carries a spring-pressed lever 6, one-end of which is in contact with its cam-disk. The opposite end of the lever carries a plunger 7, which passes through an insulating-bushing 8 into the cup 9, the latter being partly filled with mercury, as shown. It is obvious that the motion of the cam-disk will move the lever and cause the plunger to rise and fall in the cup. Both cup and plunger are made of some good electrical conductor. Aplate 10, provided with a binding-post 11, is connected with a battery 12 by means of a wire 13. The
insulated bushing 8 has a binding-post 14 For the sake mounted thereon, the end of said post contacting with the said plunger. A wire 15 leads from the binding-post 14 to the battery 12. One of these wires passes through whatever lights it is desired to affect by means of the especial cam selected. It now becomes plain that when the clockwork is in motion the cam-disks are rotated and the electric circuit is completed by the plunger dipping into the mercury. It is obvious that the circuit will remain closed as long as the lever is in contact with the cam portion of the disks. I can thus arrange the length of these portions to suit any desired exposure of light. It will also be plain that I can arrange the disks upon the stem in any desired manner and can make such changes in that arrangement as from time to time I may deem advisable without it being necessary to disturb the wiring.
It is obvious that any other source of electricity that may be convenient can be used in place of the battery here shown. It is also obvious that other changes may be made in the details of my device without affecting the general principles thereof. I do not, therefore, desire to confine myself to the exact form herein shown and described, but wish to include all such as properly come within the scope of my invention.
I have thus provided an improved form of device for the purposes specified which can be readily arranged to suit the particular conditions under which it is to be operated.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is I In combination with a series of rotatable disks having cam projections about their circumferences, a post 5 having a slot therein, an angle-lever pivoted at its angled portion in said slot, a'spring fastened to said post and designed to hold one end of said lever against the circumference of one of said disks, a mercury-cup, a movable plunger therein having an apertured end in which a slotted end of said lever is disposed and has a play, as set forth.
In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.
CONRAD F. LANCASTER.
In presence of-- LoUIs Monsnn, M. HUNTER.
US12795602A 1902-10-20 1902-10-20 Contact-maker for electrical signs. Expired - Lifetime US738333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12795602A US738333A (en) 1902-10-20 1902-10-20 Contact-maker for electrical signs.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12795602A US738333A (en) 1902-10-20 1902-10-20 Contact-maker for electrical signs.

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US738333A true US738333A (en) 1903-09-08

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US12795602A Expired - Lifetime US738333A (en) 1902-10-20 1902-10-20 Contact-maker for electrical signs.

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765144C (en) * 1940-12-21 1952-09-29 Siemens Schuckertwerke A G Cam roller
US2626997A (en) * 1950-10-13 1953-01-27 Russell W Fuller Ignition timer
US2647708A (en) * 1950-09-14 1953-08-04 Haverlin Aviat Products Inc Control for the landing gear of aircraft
US3917919A (en) * 1973-04-20 1975-11-04 Takigen Mfg Co Switch lock assembly
US20110051461A1 (en) * 2009-08-28 2011-03-03 Randall Henry Buchwald Power supply with a piezoelectric transformer and method for power conversion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765144C (en) * 1940-12-21 1952-09-29 Siemens Schuckertwerke A G Cam roller
US2647708A (en) * 1950-09-14 1953-08-04 Haverlin Aviat Products Inc Control for the landing gear of aircraft
US2626997A (en) * 1950-10-13 1953-01-27 Russell W Fuller Ignition timer
US3917919A (en) * 1973-04-20 1975-11-04 Takigen Mfg Co Switch lock assembly
US20110051461A1 (en) * 2009-08-28 2011-03-03 Randall Henry Buchwald Power supply with a piezoelectric transformer and method for power conversion

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