Improvements in Lamps for Sewing Machines and in Fastenings for the same.
Year: 1892

page_text: Date of Application, 11th Mar., 1892
Complete Specification Left, 12th Dec., 1892-Accepted, 4th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Lamps for Sewing Machines and in Fastenings for
the same.
A communication to me from the Countess JoHANNA PAUMGARTEN, of Poutwitz,
in the Empire of Germany..
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex, do hereby declare the nature of this invention to be as follows:-
This invention relates to lamps to be used with ordinary sewing machines, and to
fastenings for such lamps, and the objects of the invention are, first, to give to the
lamp fitted to a sewing machine table a great stability, second, to arrange the upper
part of the lamp in such a manner that it can be lowered and raised as desired, and,
third, to provide means for preventing the stuff which is being sewn from being
soiled by lamp oil dropping upon it, and the lamp itself from being overturned.
The base of the lamp is so arranged that it can only be held upon the sewing
machine table in the ways hereinafter described, but also that the lamp may be used
separately to stand upon any table. In the last case knobs or feet are screwed into
the bottom of the base.
A
Upon a square base is fixed a vertical hollow column provided with a vertical slit
ending at the top in a short lateral slit at right angles to the former one.
cylinder or tube is fitted into the hollow column, and provided with a pin passing
through the slit and having an external knob which when moved up in the slit can
be turned into the lateral slit, in the manner of a bayonet joint.
The lamp may therefore be adjusted in a lower or higher position.
The shade or reflector, made like the other metallic parts of sheet metal electro
plated, preferably with nickel is carried by wires radiating from a ring carrying two
hooks opposite to one another. If the ring is placed upon a ring fixed to the lamp
and provided with circular slits or openings and then turned partly round, the hooks
catch upon the ends of the openings on the lower ring, and in this manner the
attachment between the shade and the lamp is made secure.
Round the vertical column first described is arranged a groove or recess with a
collar projecting over the stand, into which any oil which may drop down, falls.
The bottom of the knobs or feet is covered with felt or similar substance for the
purpose of preventing the table from being scratched.
One method of fastening the lamp to the sewing machine table is the following.
The lamp is fixed upon the table by means of a cramp having a thumb screw
below, by which it is screwed upon the edge of the table. A forked plate embraces
the lamp and two pins at its ends fit into corresponding holes in the base of the
lamp, opposite to one another.
The outer end of the forked plate is attached to the top of the cramp by a thumb
screw.
It is obvious that the lamp may in this way be fixed at any part of the sewing
machine table.
In another method of fastening the lamp the base is fitted into a longitudinal
dovetailed groove in the table and may be moved therein over the full length of the
table.
By this arrangement also the lamp cannot be overturned and it may be fixed at
any point in the following manner.
In the sides of the guide groove are fixed toothed bars which form at the same
time guides for the base to slide in. The angular teeth of the two bars point in
opposite directions. To the bottom of the lamp base is pivotted a lever provided
Do17

page_text: with three arms two of which form palls which catch into the teeth of the bars.
The third arm carries a moveable pin, whose lower end is pressed into a longitudinal
groove in the table by a spring. In this position the whole lever system is fixed so
that it cannot pivot and by the ends of the lever which engage with the teeth the
lamp is prevented from moving.
If the lamp is to be moved the pin is first raised out of the groove, then the lever
is turned so that the ends of the lever arm are freed from the teeth.
After having adjusted the lamp in its new position the lever is turned back, the
ends engage with the teeth and the pin falling down into the groove fixes again in
its new position the whole mechanism.
It is obvious that the construction of the base of the lamp is definite and is
determined by the nature of the fastenings of the lamp.
On the other hand, the upper part of the lamp above the column may be of any
convenient kind, for instance it may carry an electric light.
Dated this 11th day of March 1892.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION:
Improvements in Lamps for Sewing Machines and in Fastenings for
the same.
A communication to me from the Countess JOHANNA PAUMGARTEN, of Pontwitz,
in the Empire of Germany.
1, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
. Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex, do hereby declare the nature of this invention and in what manner
the same is to be performed to be particularly described and ascertained
in and by the following statement and accompanying drawing, that is to say :-
This invention relates to lamps to be used with ordinary sewing machines, and
to fastenings for such lamps, and the objects of the invention are, first to give to
the lamp fitted to the table of a sewing machine a great stability, second to arrange
the upper part of the lamp in such a manner that it can be lowered and raised as
desired and third to provide means for preventing the stuff, which is being sewn,
from being soiled by lamp oil dropping upon it, and the lamp itself from being
overturned.
These objects are attained by the means illustrated in the accompanying sheet of
drawings, in which :
Figures 1 and 2 shew the connection and method of fastening the several parts of
the lamp,
Figures 3 and 4 represent a method of attaching the lamp to the plate or table of
the sewing machine,
Figures 5 to 8 shew a modification of the attachment of the lamp to the table.
The base of the lamp is so arranged that it can not only be held upon the table of.
the sewing machine in the ways hereinafter described, but also that the lamp may
be used separately to stand upon any table. In the latter case knobs or feet are
screwed into the bottom of the base.
Upon the square base A. is fixed a vertical hollow column B provided with a
vertical slit C ending at the top in a short lateral slit at right angles to the former
one. A cylinder or tube W is fitted into the hollow column and is provided
with a pin, passing, through the slit C and having an external knob D which
when moved up in the slit can be turned into the lateral slit in the manner of a
bayonet joint.
The lamp supported by the cylinder or tube W may therefore be adjusted in a
lower or higher position.

page_text: The shade or reflector E made like the other metallic parts of sheet metal electro
plated, preferably with nickel, is carried by wires Gradiating from a ring H
carrying two hooks I opposite to one another. If the ring H is placed upon the
ring M fixed to the lamp and provided with circular slits or openings K and then
turned partly round, the hooks I catch upon the ends of the openings on the
lower ring, and in this manner the attachment between the shade and the lamp
is made secure.
Round the vertical column B is arranged a groove or recess U with a collar V
projecting over the stand, into which any oil, which may drop down, falls.
The bottom of the feet or knobs F to be screwed in the base A of the lamp, when
using the same as an ordinary lamp upon any other table, is covered with felt or
similar substance for the purpose of preventing the table from being scratched.
One method of fastening the lamp to the table of the sewing machine is the
following.
The lamp is fixed upon the table P (Figures 3 and 4) by means of a cramp O
having a thumb screw O¹ below, by which it is screwed upon the edge of the table.
A forked plate R embraces the column B of the lamp, and two pins S at its ends
fit into corresponding holes in the base A of the lamp. The outer end of the forked
plate R is attached to the top of the cramp O by a screw T.
It is obvious that the lamp in this way can be fixed at any part of the table of
the sewing machine.
In another method of fastening the lamp the base A (Figures 5 to 8) is fitted
into a longitudinal dovetailed groove a of the table P and may be moved therein
over the full length of the table.
By this arrangement also the lamp cannot be overturned and it
any point in the following manner.
may be fixed at
In the sides of the guide groove a are fixed toothed bars c which form at the same
time guides for the base to slide in. The angular teeth of the two bars point in
opposite directions. To the bottom of the lamp base is pivotted a lever provided
with three arms d, d, d', two of which d d form palls, which catch into the teeth of
the bars c. The third arm has a movable pine the lower end of which is pressed
into a groove g of the table by means of a spring. In this position the whole
lever system is fixed so that it cannot turn on its pivot, and by the ends of the lever
which engage with the teeth the lamp is prevented from moving.
If the lamp is to be moved, the pine is first raised out of the groove g, then the
lever d d d' is turned so that the ends of the three armed lever are freed from the
teeth.
After having adjusted the lamp in its new position the lever d d d is turned back,
the ends engage with the teeth and the pine acted upon by the spring falling
down into the groove fixes the whole mechanism again in its new position.
It is obvious that the construction of the base of the lamp is definite, and is
determined by the nature of the fastenings of the lamp.
On the other hand, the upper part of the lamp above the column may be of any
convenient kind, for instance, it may carry an electric light.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
olaim is :-
1. A sewing machine lamp having a base A adapted to slide upon the surface of
the table, and connected by means of a connecting link R with a cramp O having a
thumb screw O', substantially as described and illustrated in Figures 1 to 4 of the
annexed sheet of drawings.
2. A sewing machine lamp having a base A provided with a three armed
lever d d d adapted to slide in a toothed groove a of the table, which lever may
be locked in any position by pressing the locking pin e acted upon by a spring into
the groove g provided at the bottom of the groove a, substantially as described and
illustrated in Figures 5 to 8 of the annexed sheet of drawings.

page_text: 3. A sewing machine lamp having a base A carrying a hollow column B with a
rectangular slit, C, in which column is fitted a cylinder W supporting the lamp so
that when the cylinder W guided by means of a pin sliding in the slit is moved up,
the lamp may be adjusted in a higher position by means of the bayonet joint
between the column B and the cylinder W, substantially as set forth and illustrated
in Figure 1 of the drawings.
4. A sewing machine lamp having a shade ring H provided with hooks J, which
hooks when turning the ring H will catch upon the ends of circular openings of a
lower ring M fixed to the lamp, whilst round the column B is arranged a groove or
recess provided with a projecting collar, into which groove any oil, which may
drop down, falls, substantially as set forth and illustrated in the accompanying
drawings.
Dated this 10th day of December 1892.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.