US407756A - Henry b - Google Patents

Henry b Download PDF

Info

Publication number
US407756A
US407756A US407756DA US407756A US 407756 A US407756 A US 407756A US 407756D A US407756D A US 407756DA US 407756 A US407756 A US 407756A
Authority
US
United States
Prior art keywords
packing
rule
flexible
strip
henry
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
Publication date
Application granted granted Critical
Publication of US407756A publication Critical patent/US407756A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/20Curve rulers or templets
    • B43L13/22Adjustable curve rulers

Definitions

  • HENRY B WILLIAMS, OF ROCHESTER, NEWV YORK, ASSIGNOR OF ONE-HALF TO LEMUEL A. JEFFREYS, OF SAME PLACE.
  • My improvement relates to flexible rules for draftsmen, and is of that kind which can be bent to any desired curve and stiffened in that position, so as to serve as the guidingedge to pencil or pen.
  • the invention consists in the combination of two elastic strips, a flexible packing between them, and clamp screws passing through slots of the. rear strip and packing, as hereinafter described.
  • Figure 1 is a plan view looking at one edge, the device being extended in a straight length.
  • Fig. 2 is a similar view showing the rule in curved form.
  • Figs. 3 and 4 are enlarged elevations of one end of the rule, looking on opposite sides.
  • Figs. 5 and 6 are longitudinal and cross sections of same, respectively, in lines 00 w and 3 y of Fig. 3.
  • the rule is composed of three principal partstwo spring strips A B of steel or other 0 suitable material, and an intermediate strid O of leather, rubber, or other suitable flexible packing.
  • the outer strip A which forms the ruling-surface, is unbroken, but the inner strip B and packing O are provided with elon- 3 5 gated slots at a for the passage of the screws.
  • G G are the screws. They are provided with beveled heads I) I), that rest flush in-the outer strip A, so as to leave no projection, and screw-shanks c c, which pass through the slots to a, and are provided on their outer ends with clamp-nuts d d, that rest on washers ff.
  • the rule is simply bent into the desired form by the hands, and the clamp-nuts, or a portion of them, are then turned up tightly, which stiffens the rule in the desired position.
  • Any desired form within the bending range can be produced, either in reverse curves, as shown in Fig. 2, or in a single curve in only one direction.
  • the slots in the inner strip and the packing 5o compensate for the unequal end motion of the two strips in making the bend.
  • the packing gives the necessary thickness, and also provides the necessary yieldingness in tightening the clamping-screws. 5 5
  • one end of the inner strip may be extended beyond the end of the other strip and packing, and be provided with a hole g, as shown in Fig. 3, to enable the instrument. to be hung up when not in use.- If desired, also, the working-face of the rulemay be provided with a scale of inches and subdivisions, as shownv in Fig. 4.

Landscapes

  • Adornments (AREA)
  • Electrophonic Musical Instruments (AREA)

Description

(No Model.)
H. B. WILLIAMS.
FLEXIBLE RULE.
Patented July 23, 1889.
WAZ w, 937 M UNITED STATES PATENT Orrrcn.
HENRY B. WILLIAMS, OF ROCHESTER, NEWV YORK, ASSIGNOR OF ONE-HALF TO LEMUEL A. JEFFREYS, OF SAME PLACE.
. FLEXIBLE RULE.
SPECIFICATION forming part of Letters Patent No. 407,756, dated July 23, 1889.
I Application filed May 27, 1889. Serial No. 312,328. (No model.)
To [l/ZZ whom it may concern.-
Be it known that I, HENRY B. \VILLIAMS,
of Rochester, in the county of Monroe and State of New York, have invented a certain new and useful Improvement in Flexible Rules and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the drawings accompanying this specification.
My improvement relates to flexible rules for draftsmen, and is of that kind which can be bent to any desired curve and stiffened in that position, so as to serve as the guidingedge to pencil or pen.
I5 The invention consists in the combination of two elastic strips, a flexible packing between them, and clamp screws passing through slots of the. rear strip and packing, as hereinafter described.
In the drawings, Figure 1 is a plan view looking at one edge, the device being extended in a straight length. Fig. 2 is a similar view showing the rule in curved form. Figs. 3 and 4 are enlarged elevations of one end of the rule, looking on opposite sides. Figs. 5 and 6 are longitudinal and cross sections of same, respectively, in lines 00 w and 3 y of Fig. 3.
The rule is composed of three principal partstwo spring strips A B of steel or other 0 suitable material, and an intermediate strid O of leather, rubber, or other suitable flexible packing. The outer strip A, which forms the ruling-surface, is unbroken, but the inner strip B and packing O are provided with elon- 3 5 gated slots at a for the passage of the screws. G G are the screws. They are provided with beveled heads I) I), that rest flush in-the outer strip A, so as to leave no projection, and screw-shanks c c, which pass through the slots to a, and are provided on their outer ends with clamp-nuts d d, that rest on washers ff.
To produce a curve the rule is simply bent into the desired form by the hands, and the clamp-nuts, or a portion of them, are then turned up tightly, which stiffens the rule in the desired position. Any desired form within the bending range can be produced, either in reverse curves, as shown in Fig. 2, or in a single curve in only one direction. The slots in the inner strip and the packing 5o compensate for the unequal end motion of the two strips in making the bend. The packing gives the necessary thickness, and also provides the necessary yieldingness in tightening the clamping-screws. 5 5
Flexible rules are known, consisting of a spring strip and a backing composed of lead or other yielding metal, which, when bent, will retain its form; but such devices are cumbersome and inconvenient, and in long wear lose their power of retaining form when bent. This device is light, thin, and always retains its elastic power, and is very enduring in use.
If desired, one end of the inner strip may be extended beyond the end of the other strip and packing, and be provided with a hole g, as shown in Fig. 3, to enable the instrument. to be hung up when not in use.- If desired, also, the working-face of the rulemay be provided with a scale of inches and subdivisions, as shownv in Fig. 4.
Having described my invention, what I claim as new, and desire to secure by Letters Patent, is
In a flexible rule, the combination of two elastic strips, an intermediate flexible packing, the inner strip and the packing being provided with slots, screws attached to the outer stripand passing through the slots, and nuts turning on the screws, as shown and described, and for the purpose specified.
In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.
HENRY B. VVILLIAMSQ Witn esses:
R. F. Oscoon,
L. A. JEFFREYS.
US407756D Henry b Expired - Lifetime US407756A (en)

Publications (1)

Publication Number Publication Date
US407756A true US407756A (en) 1889-07-23

Family

ID=2476698

Family Applications (1)

Application Number Title Priority Date Filing Date
US407756D Expired - Lifetime US407756A (en) Henry b

Country Status (1)

Country Link
US (1) US407756A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488923A (en) * 1945-09-24 1949-11-22 Warren J Mead Device for assuming and maintaining curved configurations
US2790245A (en) * 1956-01-03 1957-04-30 Wilkes Reuben Drafting spline
US6105271A (en) * 1995-07-20 2000-08-22 Johannes Heidenhain Gmbh Arrangement for accommodating a scale in a positive engagement
US6167633B1 (en) 1998-10-16 2001-01-02 Clc Associates Inc. Curve forming device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488923A (en) * 1945-09-24 1949-11-22 Warren J Mead Device for assuming and maintaining curved configurations
US2790245A (en) * 1956-01-03 1957-04-30 Wilkes Reuben Drafting spline
US6105271A (en) * 1995-07-20 2000-08-22 Johannes Heidenhain Gmbh Arrangement for accommodating a scale in a positive engagement
US6167633B1 (en) 1998-10-16 2001-01-02 Clc Associates Inc. Curve forming device

Similar Documents

Publication Publication Date Title
US1257683A (en) Combination-tool.
US413579A (en) Banjo-thimble
US407756A (en) Henry b
US563510A (en) Ruler
US569358A (en) Draftsman s measure
US858498A (en) Ruler.
US1107432A (en) Drawing implement.
US670766A (en) Book-mark.
US1020253A (en) Drafting appliance.
US1142368A (en) Drafting instrument.
US423238A (en) Ink-eraser
US346836A (en) Protractor
US989547A (en) Curve-scriber.
US1216672A (en) Finger-measuring device for rings.
USD23401S (en) Design for a razor-strop
US407144A (en) Ruler
US518759A (en) T-square rule
US563277A (en) Extensible ruler
US1059154A (en) Combined blotter-holder and ruler.
US1131962A (en) Draftsman's triangle.
US999899A (en) Combination-tool.
US305568A (en) Penman s assistant
US147943A (en) William a
US960031A (en) Posting-ruler.
US515522A (en) Ruler