Improvements in or appertaining to Lime Cylinders or Cases used in connection with Magic Lanterns.
Year: 1893

page_text: Date of Application, 21st Dec., 1893
Complete Specification Left, 13th Sept., 1894-Accepted, 10th Nov.,
1894
PROVISIONAL SPECIFICATION.
Improvements in or appertaining to Lime Cylinders or Cases used
in connection with Magic Lanterns.
We HERMANN BAMFORD and WILLIAM BAMFORD both of No. 242 Yorkshire
Street Rochdale in the County of Lancaster Photographic Chemists, do hereby
declare the nature of this invention to be as follows
Our improvements relate to cylinders or cases used in connection with magic
lanterns, which cylinders or cases are employed for the purpose of storing the
small perforated circular pieces or blocks of lime which must be, as is well known
kept in an air tight cylinder or case and thus preserved from the influence or effects
of the atmosphere.
Our object in connection with such cases or cylinders as hereinbefore referred to
being to provide a means in order to obviate the fracture, powdering or falling of
the said limes within the case or cylinder or fracture when required to be used as is
of frequent occurrence from the fact of the rubbing action of one upon or against
one another as the limes are as is well known of a brittle and powdery nature. We
are also enabled by our contrivance to maintain the perforation through the block
free from obstruction or impediment such as lime dust; thereby facilitating their
application for the purposes for which they are required, as oftentimes when the
aperture or perforation is closed the removal of the dust therefrom greatly interferes
with the duties of the operator and frequently results in the breakage of the lime
block.
According to our present construction we provide within the tube cylinder or
case herein before referred to a spindle or wire of a length corresponding to the
length of the case, and provided at one end with a circular disc or plate of a
diameter corresponding to the diameter of the case, we pass the wire or spindle
into the case, the disc being situate at the bottom of the case, the perforated limes
to be stored within the case are then passed on to the spindle until the case is
filled, the perforations being thus kept or maintained free and open by such means,
the limes are consequently always ready when required for use obviating the
necessity of loss of time or damage as heretofore, the whole of the limes by our
arrangement being maintained in one mass or whole obviating independent move-
ment with relation to each other thus avoiding the rubbing action of one against
the other, consequently obviating the powdering or falling thereof.
Dated this 20th day of December 1893
J. H. BUTTERWORTH,
Rochdale, for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or appertaining to Lime Cylinders or Cases used
in connection with Magic Lanterns.
.
We HERMANN BAMFORD and WILLIAM BAMFORD both of 242 Yorkshire
Street Rochdale in the County of Lancaster Photographic Chemists, 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:—
Our improvements relate to cylinders or cases used in connection with magic
lanterns or analogous lime light apparatus which cylinders or cases are employed

page_text: for the purposes of storing the small cylindrical. pieces or blocks of lime which it
is necessary to keep airtight or preserved from the influence of the atmosphere.
Our object more particularly as regards such cases herein before referred to is to
provide a means for inaintaining the blocks intact or whole and to avoid fracture
or breakage thereof when in the case or when applied for use. both of which
occurrences are frequent as such blocks being of a fragile nature the rubbing action
or attrition against each other the same are themselves liable to fall into a state of
powder or dust and in consequence of the apertures provided in each block-for a
purpose well understood-being oftentimes closed up by particles of lime dust or
powder it frequently happens that when placing the blocks in position on the stud
or pin of the lime light apparatus breakage or fracture of the block occurs from
the fact of forcing the same on the stud in the endeavour to remove the obstructing
lime dust or from the fact of removing dust by other means.
In order that our improvements the subject of this invention may be understood
we have hereunto appended a sheet of drawings in which like letters of reference
indicate like parts.
Fig. 1. represents an elevation of a lime light cylinder with our invention applied
thereto.
Fig. 2. represents our invention detached from the cylinder or case.
According to our construction we provide within the cylinder, tube, or case a. a
rod or spindle of metal b. of small section which spindle we provide at the lower
end with a plate, disc, or cup c, corresponding to the form of the case which may
be of any convenient form and which spindle is arranged of suitable length and
provided with a sharp or cutting edge at its upper part so as to cut its way thro'
the obstructing lime dust which may be situated in the aperture of the block and
so adapted as to project above the upper part or mouth a' of the case in order to
facilitate or allow of the removal of the spindle when required to abstract one or
more blocks from the case which upper part or opening we provide with a concave
cover d. of any suitable form see Fig. 1. The disc or cup c. being situate at the
bottom or lower part of the case the perforated lime blocks-one e of which. is
shewn as an illustration Fig. 1.—are passed on to the spindle the case being
capable of storing more or less in number according to the length of the cylinder
or case and spindle respectively. The perforations e' may be maintained by such
means free from obstruction or kept open and the blocks are consequently always
ready for use obviating loss of time in their application and damage as heretofore
as by our arrangement the lime blocks are maintained in one mass or whole as the
side c¹ of the cup impinges on or around the tube or case maintaining the spindle
in a rigid condition within the tube or case thus obviating independent movement
of each block relatively to each other within the case thus avoiding rubbing action
or attrition and consequently preventing the blocks falling to a state of powder or
useless condition.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is
1. In combination the tube or case a. with a concave cover d. and the spindle 6,
provided with a cup plate or disc c. as and for the purpose herein fully set forth
and described.
2. The spindle b. provided with a plate, disc or cup c corresponding to the form
of the case a. as and for the purpose herein set forth.
1
1901
HERMANN BAMFORD.
W. BAMFORD.
J. H. Butterworth,
Rochdale, for the Applicants.