Improvements in or relating to Lamp Supports or Brackets.
Year: 1895

page_text: Date of Application, 9th July, 1895-Accepted, 28th Sept., 1895
COMPLETE SPECIFICATION.
Improvements in or relating to Lamp Supports or Brackets.
A communication from EDUARD FRANKE, of Radeberg, in the Empire of
Germany, Master Glassgrinder.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent 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 :-
The present lanip-support as used for example on sewing machines is made in
such a manner that it can be arranged on the arm of Singer's sewing machine-
frames and with its jointed arm carry the petroleum lamp freely suspended. By
this arrangement the lamp-support leaves the table-slab of the machine perfectly
free for the sewing or work and prevents the same from coming into contact with
the lamp and consequently from being stained with petroleum. Owing to the arin
being jointed the lamp can easily be adjusted to whatever position is considered
most favourable for lighting the work.
In the accompanying drawing
Figures 1 and 2 represent the lamp-support itself in side elevation and plan,
Figure 3 shows the application of the same to the arm of Singer's sewing machine
frame.
In Figures 4 and 5 are shown a side elevation and plan of a novel kind of
securing clamp for the jointed arm and the application of the latter to the clamp
which differs from the arrangement represented in the previously mentioned
figures.
Figure 6 shows a side view of the bracket Figures 4 and 5 with lifted supporting
arm.
The lamp support consists of a vase A for the reception of the petroleum-basin L
of the lamp, of a jointed supporting-arm B and a securing clamp C. The latter is
so arranged that it can embrace the arm of the sewing-machine frame D at a
suitable spot preferably near the frame-head. The top part c of the clamp is
jointed to the body thereof and can be tightened towards the latter by means of a
screw c¹. For the purpose of protecting the varnish-coating on the arm of the
machine-frame the bracket may be interiorly suitably lined with a layer of soft
leather, felt or the like. The first of the links 123 of the arm B is pivotted
to C by means of a pin b. The links are jointedly connected together by means of
other vertical pins. The last link ³ carries the vase A into which the petroleum-
basin L may be inserted. The latter may also be made extra safe in A by any
suitable means for example by a screw. According to requirement the supporting-
arm may be composed of a larger or smaller number of jointed links although it is
advisable not to use less than three joints. The opening of the clamp shown in
Figures 1 to 3 must correspond as accurately as possible to the cross-sectional form
of the arm D of the sewing machine frame.
On the other hand the clamp shown in Figures 4 to 6 adapts itself to machine
arms of different size and various sections. This clamp is characterized by the
fact that the links of a pitch link-chain are attached to the body C by means of
a horizontally situated pin c³. The greater the number of links forming the
entire length of the chain, i.e. the shorter the individual links are, the more flexible
the chain will be and the better it will adapt itself to machine arms of various

page_text: sections. The stretching or tightening screw which passes through a slot c in
the clamp C is provided outside the slot with a nut c' and is jointedly connected to
the last link of the chain. For the purpose of placing the bracket on the arm
of the machine frame the nut e' is removed and the screw co taken out of the slot c*.
The angular. piece C is then placed on the arm of the machine-frame the chain is
slung around the latter the screw is inserted into the slot and the chain is
drawn taut by means of the nut c'. The screw e by this means adjusts itself of its
own accord in the slot e to a height corresponding with that of the section of the
arm of the machine-frame. In this case too a strip of soft material may be inserted
in the clamp to save the varnish-coating.
In sewing machines for family use the upper frame of the machine is as is well-
known, covered with a casing when not in use. When the casing is narrow even
the folded lamp-support (with the lamp of course removed) as far as it has been
described up to the present cannot in certain cases find room in the casing. In
order not to have to unscrew it each time from the arm of the machine frame and
in order to enable it to be stowed away in the casing it is advisable to make the
following arrangement. The link b¹ of the supporting arm should not be made to
turn immediately around a pin arranged on C, but the pin should be situated on a
short intermediate link which may itself turn around a horizontal piu 65 provided
in the, forked projection of C, see Figs. 4 to 6. This link with the links of the
supporting arm situated thereon can only be. turned upwards as when the edge
of the link comes against the edge of the piece C prevented from turning
downwards, see Figure 4. If turned slightly upwards the links of the supporting-
arm with the vase A do not project against the vertical wall of the casing but lie
obliquely in the corner between the wall and cover of the casing, where there is of
course more room. Before putting the casing on the machine the links of the
supporting arm and the vase should of course be turned as closely to the arm of the
machine frame as possible.
Having now particularly described and ascertained the nature of the said
invention as cominunicated to me by my foreign correspondent, and in what
manner the same is to be performed, I declare that what I claim is ;-
1. A lamp support consisting of a supporting arm (B) composed of several
links such as b¹ 263 jointedly connected together and carrying on the one hand
the vase (A) for the reception of the oil receptacle of the lamp and
on the
other hand a clamp (C) for securing the support in position substantially as
described.
2. A clamp for securing the supporting arm (B) to the arm of the machine
or in any like position the frame thereof characterized by being so constructed
that the one end of a link-chain (c) is secured to the body of the clamp the
other end carrying the tightening screw c which passes through a slot c in the
clamp C and is provided on the other side of the same with a nut for adjusting
the chain substantially as described.
3. The arrangement that the end link b¹ on the clamp (C) is made to turn not
only in a horizontal plane but by means of the intermediate link (64) with pin (65)
also in a vertical plane substantially as described.
4. The combination and arrangement of parts constituting a lamp-support
substantially as and for the purpose described and illustrated in Figures 1 2 and 3
or in Figures 45 and 6 of the accompanying drawings.
Dated this 9th day of July 1895.
BOULT & WADE,
Agents for the Applicant.