Year: 1888

page_text: I, AUGUST KIESOW of the Firm of Kiesow and Company, of 24 and 26, Basinghall
Street, London, in the County of Middlesex, Merchant, 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 :-
This invention relates to lamp burners, and, more especially to the means for
holding, when lifted, the chimney and globe gallery of lamps and such like, together
with such other parts as may be necessary for the purpose of trimming and lighting
the lamp. The invention consists in the particular form of gearing, being a movable
rack or racks fixed to the gallery and to such other parts it may be necessary to hold
up, so that such parts are simultaneously movable as one integral part; said rack or
racks working in a guide or guides in the usual way and furnished with certain
recesses corresponding in number to and for engagement with or by the teeth of a
toothed sector or sectors pivoted in a stationary position in the burner body or basket
said rack being also supplied with an enlarged indent for engagement with or by a
corresponding enlarged tooth having a curved, concave, or indented surface on the
aforesaid sector or sectors; the object being to enable the rack or racks, which carries
the chimney and globe gallery, etc., to be lifted a certain height by the partial turning
of the said sector or sectors by any convenient handle thereto, and cause the curved
surface of the enlarged tooth of the sector to engage in or with the edge of the
enlarged indent in the rack, and, by reason of its shape, and the contact of the sector
at its base against the rack, hold the said rack or racks up in a fixed position until
the handle is turned in the opposite direction, when the rack or racks will be lowered
and the gallery etc., brought back into place.
In the drawing, Figure 1 is a sectional side view of the gallery, provided with
the improved rack and sector, and shown in its lowest or downward position.
Figure 2 the same in highest or upward position. A is the rack, B the toothed
sector, C the gallery, D the dome, E square pin or other suitable bolt etc., acting
as the pivot for the sector, furnished with a handle, F is the enlarged tooth on
the sector and F the enlarged indent on the rack, H is the concave, indented or
curved surface on the tooth F, G the contact point of the sector. .

page_text: . When the point G is in contact with the rack A, as shown in Figure 2, simul-
taneously the centre portion of the curved surface H of the tooth F is in contact
at the point or edge H¹ of the indent F1 of the rack which is thus arrested in its
highest position. On the handle of the sector being turned in the reverse direction
the sector is moved and the tooth F disengaged from the point H¹ places
itself into the indent F' when the remaining teeth engage in the rack which is
thus lowered until it assumes the position shown in Figure 1-Two or more racks
and sectors corresponding may be used.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The rack A having an indent Fi in combination with the toothed sector B
having tooth F with curved face H adapted to engage in said indent substantially
in the manner illustrated and described and for the purpose set forth.
2. The rack A having the indent F¹ in combination with the sector B having
tooth F with a curved face H and the shoulder G, the whole for the purposes described
and substantially as illustrated and set forth.