US2552748A - Sewing-machine light with stepped reflecting surfaces - Google Patents

Sewing-machine light with stepped reflecting surfaces Download PDF

Info

Publication number
US2552748A
US2552748A US639515A US63951546A US2552748A US 2552748 A US2552748 A US 2552748A US 639515 A US639515 A US 639515A US 63951546 A US63951546 A US 63951546A US 2552748 A US2552748 A US 2552748A
Authority
US
United States
Prior art keywords
lamp
sewing
sections
reflecting surfaces
casing
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
US639515A
Inventor
Sutter Hans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brutsch & Co
Original Assignee
Brutsch & Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Brutsch & Co filed Critical Brutsch & Co
Application granted granted Critical
Publication of US2552748A publication Critical patent/US2552748A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B79/00—Incorporations or adaptations of lighting equipment

Definitions

  • the present invention relates to an improved illuminating device for sewing machines, comprising an electrical incandescent lamp fixed to the sewing head and a shade.
  • the shade containing the lamp is a case-part, detachably secured to the front face of the sewing head which part at its lower surface is open and of arched shape in the transverse section, whose portion beneath the filament of the lamp consists of arched sections which are arranged in a step-like manner relative to each other and towards the lamp, so that between these sections slit-like outlet-openings are provided, which openings lie in horizontal planes.
  • Fig. 1 is a front end view of the sewing-head of a sewing machine
  • Fig. 2 is a sectional view along the line 11-11 of Fig. 1, in enlarged scale;
  • Fig. 3 is a sectional plan view along the line IIIIII of Fig. 2.
  • a casing i of arched shape in the transverse section is detachably secured to the front end of the sewing-head of the sewing machine.
  • the upper portion of this casing contains the electric incandescent lamp 2 with its filament 3.
  • the lower portion of the casing is composed of sections 4 of arched shape which are arranged in a step-like manner downwardly and toward the lamp. In this way slit-like light outlet-openings 5 in horizontal planes are formed between these sections.
  • the portion of the shade consist ing of arch-like sections lies below the filament of the lamp. According to the horizontal course of the light outlet-openings the luminous rays from the filament 3 of the electric incandescent lamp 2 can only leave to the bottom and the latter illuminate the work-piece in a circumference in front and beneath the small presser foot of the machine.
  • the parts 4 present interior deflection surfaces for the light rays which surfaces lie at an acute angle with relation to the lamp axis and materially aid in reflecting the light onto the work space. More specifically, upon reference to Figure 2, it is to be noted that the lower border of the upper part of the casing covering the lamp projects outwardly as shown at 6 and the interior faces of the next two lower sections are formed by two curved faces disposed at an acute angle as shown at i, while the interior face of the lowest section constitutes a curved plane face inclined at an acuate angle relative to the axis of the lamp as shown at 8. It is thus apparent from the drawing that each of the sections 4 has reflecting surfaces which lie in a common inclined plane that is transversely arcuate.
  • the edges of the arch-like sections of the shade, which edges circumscribe the slit-like light outlet-openings, are sharpened.
  • An illuminating device for sewing machines including in combination, an electric incandescent lamp arranged at the sewing head of the machine, a casing part detachably secured on the working side of the machine and covering the lamp at the upper part and being open at its lower face, said casing part having an arched shape in the transverse section and horizontal lying parallel arched sections below the filament of the lamp, said sections being arranged in a step-like manner towards the lamp in such a way that between these sections slit-like light outlet openings are provided lying in horizontal planes, at least a portion of the interior faces of the sections being inclined to the axis of the lamp at an acute angle to reflect the rays inwardly and downwardly to concentrate the light rays on the work place of the table.
  • An illuminating device for sewing machines including in combination, an electric incandescent lamp provided at the sewing head of the machine, a casing part detachably secured on the working side of the machine and covering the lamp at the upper part and being open at its lower face, said casing part having an arched shape in the transverse section and horizontal lying parallel arched sections below the filament of the lamp, said sections being arranged in a step-like manner towards the lamp in such a way that between these sections slit-like light outlet openings are provided lying in horizontal planes, the lower border of the upper part of the casing covering the lamp projecting outwardly, the interior faces of the next two lower arched sections having two surfaces disposed at an obtuse angle relative to each other, and the interior face of the lowest arched section being inclined at an acute angle to the axis of the lamp.
  • An illuminating device for sewing machines including a casing detachably secured on the working side of the machine adjacent the sewing head thereof, an electric incandescent lamp mounted within said casing, said casing having an arcuate "wall adjacent the lamp and being open at its lowerface at an area substantially in alignment with the axis of the lamp, a plural- I ity of arcuate reflecting sections disposed in stepped laterally spaced relationship with respect to the axis of the lamp with .theJlower-isection nearer said axis, the spacing between the sections providing light outlet openings toprovide ,illumination exteriorly of the casing and eachgsection having at least one reflecting surface inclined to the axis of the lamp toreflect light rays inwardly and downwardly to concentrate the light rays at the working area of the sewing machine, said reflecting sections lying in a common arcuate inclined plane.

Description

May 15, 1951 SUTTER 2,552,748
SEWING MACHINE LIGHT WITH STEPPED REFLECTING SURFACES Filed Jain. 7, 1946 Patented May 15, 1951 SEWING-MACHINE LIGHT WITH STEPPED REFLECTING SURFACES Hans Suttcr, St. Gallen, Switzerland, assignor to Brutsch & (30., Zurich, Switzerland Application January 7, 1946, Serial No. 639,515
In Switzerland August 9, 1944 Section 1, Public Law 690, August 8, 1946 Patent expires August 9, 1964 3 Claims. 1
The present invention relates to an improved illuminating device for sewing machines, comprising an electrical incandescent lamp fixed to the sewing head and a shade.
According to the invention the shade containing the lamp is a case-part, detachably secured to the front face of the sewing head which part at its lower surface is open and of arched shape in the transverse section, whose portion beneath the filament of the lamp consists of arched sections which are arranged in a step-like manner relative to each other and towards the lamp, so that between these sections slit-like outlet-openings are provided, which openings lie in horizontal planes.
In the accompanying drawing there is shown a preferred embodiment according to the invention.
Fig. 1 is a front end view of the sewing-head of a sewing machine;
Fig. 2 is a sectional view along the line 11-11 of Fig. 1, in enlarged scale;
Fig. 3 is a sectional plan view along the line IIIIII of Fig. 2.
According to the drawing a casing i of arched shape in the transverse section is detachably secured to the front end of the sewing-head of the sewing machine. The upper portion of this casing contains the electric incandescent lamp 2 with its filament 3.
The lower portion of the casing is composed of sections 4 of arched shape which are arranged in a step-like manner downwardly and toward the lamp. In this way slit-like light outlet-openings 5 in horizontal planes are formed between these sections. The portion of the shade consist ing of arch-like sections lies below the filament of the lamp. According to the horizontal course of the light outlet-openings the luminous rays from the filament 3 of the electric incandescent lamp 2 can only leave to the bottom and the latter illuminate the work-piece in a circumference in front and beneath the small presser foot of the machine.
Furthermore, as is clearly apparent from Figs. 2 and 3, the parts 4 present interior deflection surfaces for the light rays which surfaces lie at an acute angle with relation to the lamp axis and materially aid in reflecting the light onto the work space. More specifically, upon reference to Figure 2, it is to be noted that the lower border of the upper part of the casing covering the lamp projects outwardly as shown at 6 and the interior faces of the next two lower sections are formed by two curved faces disposed at an acute angle as shown at i, while the interior face of the lowest section constitutes a curved plane face inclined at an acuate angle relative to the axis of the lamp as shown at 8. It is thus apparent from the drawing that each of the sections 4 has reflecting surfaces which lie in a common inclined plane that is transversely arcuate.
In order that the luminous rays emanating from the light outlet-openings can blend from one to the other i. e. can overlap themselves on the working planes of the sewing machine, the edges of the arch-like sections of the shade, which edges circumscribe the slit-like light outlet-openings, are sharpened.
What I claim is:
1. An illuminating device for sewing machines including in combination, an electric incandescent lamp arranged at the sewing head of the machine, a casing part detachably secured on the working side of the machine and covering the lamp at the upper part and being open at its lower face, said casing part having an arched shape in the transverse section and horizontal lying parallel arched sections below the filament of the lamp, said sections being arranged in a step-like manner towards the lamp in such a way that between these sections slit-like light outlet openings are provided lying in horizontal planes, at least a portion of the interior faces of the sections being inclined to the axis of the lamp at an acute angle to reflect the rays inwardly and downwardly to concentrate the light rays on the work place of the table.
2. An illuminating device for sewing machines including in combination, an electric incandescent lamp provided at the sewing head of the machine, a casing part detachably secured on the working side of the machine and covering the lamp at the upper part and being open at its lower face, said casing part having an arched shape in the transverse section and horizontal lying parallel arched sections below the filament of the lamp, said sections being arranged in a step-like manner towards the lamp in such a way that between these sections slit-like light outlet openings are provided lying in horizontal planes, the lower border of the upper part of the casing covering the lamp projecting outwardly, the interior faces of the next two lower arched sections having two surfaces disposed at an obtuse angle relative to each other, and the interior face of the lowest arched section being inclined at an acute angle to the axis of the lamp.
3. An illuminating device for sewing machines including a casing detachably secured on the working side of the machine adjacent the sewing head thereof, an electric incandescent lamp mounted within said casing, said casing having an arcuate "wall adjacent the lamp and being open at its lowerface at an area substantially in alignment with the axis of the lamp, a plural- I ity of arcuate reflecting sections disposed in stepped laterally spaced relationship with respect to the axis of the lamp with .theJlower-isection nearer said axis, the spacing between the sections providing light outlet openings toprovide ,illumination exteriorly of the casing and eachgsection having at least one reflecting surface inclined to the axis of the lamp toreflect light rays inwardly and downwardly to concentrate the light rays at the working area of the sewing machine, said reflecting sections lying in a common arcuate inclined plane.
HANS SU'ITER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS .10 Number Name Date 2,033,235 Ferree et a1 Mar. 10, 1936 i'2,208,522 Cnllman July 16, 1940 2,226,689 'Barber Dec. 31, 1940 2 ,267,796 Lezebnick Dec. 30, 1941 15 '-2,370;084 Smith Feb. 20, 1945
US639515A 1944-08-09 1946-01-07 Sewing-machine light with stepped reflecting surfaces Expired - Lifetime US2552748A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2552748X 1944-08-09

Publications (1)

Publication Number Publication Date
US2552748A true US2552748A (en) 1951-05-15

Family

ID=4570076

Family Applications (1)

Application Number Title Priority Date Filing Date
US639515A Expired - Lifetime US2552748A (en) 1944-08-09 1946-01-07 Sewing-machine light with stepped reflecting surfaces

Country Status (1)

Country Link
US (1) US2552748A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704527A (en) * 1955-03-22 Theenhausen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2033235A (en) * 1933-06-29 1936-03-10 Ferree Clarence Errol Direct lighting unit
US2208522A (en) * 1936-09-03 1940-07-16 Lenslite Co Inc Lighting sewing machines and the like
US2226689A (en) * 1939-12-04 1940-12-31 Montgomery Ward & Co Inc Sewing machine light or the like
US2267796A (en) * 1938-12-15 1941-12-30 Leyden Isadore Lighting fixture
US2370084A (en) * 1942-11-13 1945-02-20 Polaroid Corp Light polarizer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2033235A (en) * 1933-06-29 1936-03-10 Ferree Clarence Errol Direct lighting unit
US2208522A (en) * 1936-09-03 1940-07-16 Lenslite Co Inc Lighting sewing machines and the like
US2267796A (en) * 1938-12-15 1941-12-30 Leyden Isadore Lighting fixture
US2226689A (en) * 1939-12-04 1940-12-31 Montgomery Ward & Co Inc Sewing machine light or the like
US2370084A (en) * 1942-11-13 1945-02-20 Polaroid Corp Light polarizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704527A (en) * 1955-03-22 Theenhausen

Similar Documents

Publication Publication Date Title
US2552748A (en) Sewing-machine light with stepped reflecting surfaces
US1924157A (en) Illuminating device for sewing machines or the like
US2179409A (en) Casket illuminating apparatus
US2286492A (en) Lens attachment for sewing machine lighting devices
US1488233A (en) Lighting attachment for sewing machines
US4382273A (en) Sewing machine light fixture
US2271371A (en) Iron with illuminating device
US3042795A (en) Photocopy machine
US1685850A (en) Lighting attachment for sewing machines
US2598452A (en) Lighting device for sewing machines
US2217863A (en) Sewing machine lighting attachment
US2277972A (en) Lighting device
GB483210A (en) Shoe
US2677042A (en) Lighting device for sewing machines
ZA801879B (en) Bench light for tubular fluorescent lamps
US2268156A (en) Mechanic's light
US2302390A (en) Guard device for sewing machines
US2511780A (en) Desk type lamp
US2300925A (en) Illuminating device for pressers
US1797555A (en) Means for attaching shields to an electric-light fixture
US1672707A (en) Horn for sewing machines
GB534541A (en) Lighting equipment for sewing machines
US2699132A (en) Sewing machine attachment
ES100430U (en) Tilting front cover lampholder for sewing machines (Machine-translation by Google Translate, not legally binding)
SU81104A1 (en) Apparatus for black and white marking boards before cutting them on a trimming machine