US933759A - Tracing instrument. - Google Patents

Tracing instrument. Download PDF

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Publication number
US933759A
US933759A US42554808A US1908425548A US933759A US 933759 A US933759 A US 933759A US 42554808 A US42554808 A US 42554808A US 1908425548 A US1908425548 A US 1908425548A US 933759 A US933759 A US 933759A
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US
United States
Prior art keywords
holder
guide
instrument
tracing
tracing instrument
Prior art date
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
Application number
US42554808A
Inventor
Hermann Marie Camille Jahnholtz
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to US42554808A priority Critical patent/US933759A/en
Application granted granted Critical
Publication of US933759A publication Critical patent/US933759A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • 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
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18208—Crank, pitman, and slide

Definitions

  • This invention relates to improvements in tracing instruments and the principal object is to provide an instrument for the purpose of tracing and copying drawings and the like by the well known process of pricking.
  • the invention also provides a very simple and cheap apparatus for the said purpose.
  • the annexed drawing is a vertical section of the apparatus which comprises a hollow tube A in the lower part of which the needle holder B is slidably mounted.
  • the needle C is secured in the. holder by a screwthreaded ring D or other means for this purpose may be adopted.
  • The'needle holder B is reciprocatable in a hollow cylindrical guide E, its movement being limited by an annular shoulder E in the said guide.
  • the latter carries on its circumference another hollow guide 6 for the guide rod F which the draftsman holds in his hand to follow and prick the outlines of the drawing to be reproduced.
  • the rod F is secured at the desired height in the guide 7) by means of a set screw 6 r
  • the needle holder B is provided at its upper end with a hook Gr adapted to engage a flexible wire or cord H.
  • a spring I which tends to thrust the holder B into its position of rest but has suflicient strength to allow of the needle piercing the drawing.
  • the cord or wire H which may have a sheath, passes into a second guide J carried by a bearing L in which it is secured by a set screw J.
  • a metal disk M perforated for the passage of the threaded gudgeon M of the eccentric N.
  • the action of the apparatus is as follows.
  • the eccentric N actuated by a crank or sewing machine wheel or other means, exerts a rectilinear pull on the cord H at each revolution tending to lift the holder B inward whereupon the spring I thrusts the holder outward again; thus enabling a series of pricks to be produced.
  • the hollow tube A is secured to the guide E by a bayonet fastening E or otherwise.
  • the apparatus can be operated by hand or mechanically and may be used with apparatus coupled to the eccentric or to a rod, rocker, pump, etc., capable of transmitting movements and of regulating the speed, if necessary with variable gear.
  • the shape and dimensions of the parts can be varied as. required and the cord or wire may be of any suitable kind.
  • tracing instrument comprising a hollow tubular body having an interior annular shoulder, an implement holder mounted to have rectilinear movement within said cylinder and limited in its outward movement by said annular. shoulder, a flexible member connected at one end to said holder, and rotatable means connected to the opposite end of said flexible member adapted to exert intermittent tractive eflorts on said flexible member to move same rectilinearly of the body and move the holder inward relatively thereto, and a spring within the body adapted to force said holder outward from the body between the aforesaid tractive efforts on the flexible member, substantially as described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sewing Machines And Sewing (AREA)

Description

H. M. G. JAHNHOLTZ.
TRAGING INSTRUMENT.
APPLICATION FILED APR. 8. 1908.
fPatented Sept. 14,1909.
UNITED STATES PATENT OFFICE.
HERMANN MARIE CAMILLE JAHNHOLTZ, 0F BORDEAUX, FRANCE.
TRAGING- INSTRUMENT.
To all whom it may concern:
Be it known that I, HERMANN MARIE OAMILLE JAI-INHOLTZ, a citizen of the French Republic, residing at Bordeaux, in France, have invented certain new and useful Improvements in Tracing Instruments, of which the following is a specification.
This invention relates to improvements in tracing instruments and the principal object is to provide an instrument for the purpose of tracing and copying drawings and the like by the well known process of pricking.
The invention also provides a very simple and cheap apparatus for the said purpose.
The annexed drawing is a vertical section of the apparatus which comprises a hollow tube A in the lower part of which the needle holder B is slidably mounted. The needle C is secured in the. holder by a screwthreaded ring D or other means for this purpose may be adopted. The'needle holder B is reciprocatable in a hollow cylindrical guide E, its movement being limited by an annular shoulder E in the said guide. The latter carries on its circumference another hollow guide 6 for the guide rod F which the draftsman holds in his hand to follow and prick the outlines of the drawing to be reproduced. The rod F is secured at the desired height in the guide 7) by means of a set screw 6 r The needle holder B is provided at its upper end with a hook Gr adapted to engage a flexible wire or cord H. In the tube E is located a spring I which tends to thrust the holder B into its position of rest but has suflicient strength to allow of the needle piercing the drawing. The cord or wire H, which may have a sheath, passes into a second guide J carried by a bearing L in which it is secured by a set screw J. To the end of said cord H is attached a metal disk M perforated for the passage of the threaded gudgeon M of the eccentric N.
The action of the apparatus is as follows.
Specification of Letters Patent.
Application filed April 6, 1908.
Patented Sept. 14, 1909.
Serial No. 425,548.
The eccentric N actuated by a crank or sewing machine wheel or other means, exerts a rectilinear pull on the cord H at each revolution tending to lift the holder B inward whereupon the spring I thrusts the holder outward again; thus enabling a series of pricks to be produced. The hollow tube A is secured to the guide E by a bayonet fastening E or otherwise.
The apparatus can be operated by hand or mechanically and may be used with apparatus coupled to the eccentric or to a rod, rocker, pump, etc., capable of transmitting movements and of regulating the speed, if necessary with variable gear.
The shape and dimensions of the parts can be varied as. required and the cord or wire may be of any suitable kind.
What I claim as my invention and desire to secure by Letters Patent of the United States is A. tracing instrument comprising a hollow tubular body having an interior annular shoulder, an implement holder mounted to have rectilinear movement within said cylinder and limited in its outward movement by said annular. shoulder, a flexible member connected at one end to said holder, and rotatable means connected to the opposite end of said flexible member adapted to exert intermittent tractive eflorts on said flexible member to move same rectilinearly of the body and move the holder inward relatively thereto, and a spring within the body adapted to force said holder outward from the body between the aforesaid tractive efforts on the flexible member, substantially as described.
In witness whereof I have signed this specification in the presence of two witnesses.
HERMANN MARIE OAMILLE JAHNHOLTZ.
WVitnesses A. PALTEAUx, H. PHILLIPS.
US42554808A 1908-04-06 1908-04-06 Tracing instrument. Expired - Lifetime US933759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US42554808A US933759A (en) 1908-04-06 1908-04-06 Tracing instrument.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42554808A US933759A (en) 1908-04-06 1908-04-06 Tracing instrument.

Publications (1)

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US933759A true US933759A (en) 1909-09-14

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US42554808A Expired - Lifetime US933759A (en) 1908-04-06 1908-04-06 Tracing instrument.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825406A (en) * 1955-05-31 1958-03-04 Ibm Tape perforator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825406A (en) * 1955-05-31 1958-03-04 Ibm Tape perforator

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