Kingdom.]
AND SURGICAL INSTRUMENTS.
North, North Central, and South Central Galleries.
417
68
MacDowall, C., 4 Hyde Street , Bloomsbury —p Inventor,
st ^ . k~ movemen L with a dead escapement of a new con-g Uctl °u, in which the escape-wheel consists merely of a, J ^sc, with a single pin in it. The parts are arrangedTh 1316 P ur P ose exhibiting the action of the escapement,th e u d y antages claimed are—the impulse takes place atc e nil ddle of the vibration of the pendulum, as in theacf liri0 - n dead escapement; it is given chiefly by directg t l0n . instead of oblique, and requires little oil; the con-es ? Ct * or l is easy, and may be made with a ruby for thej t . P e- pin as cheaply as with a common recoil escapement.^ a Pplicable to watches as well as clocks,v-k* .1. Dent, Manufacturer and Patentee, by assignment.)
69
Re
Mapple, D. D., 17 Hull's Place , John's Bow,St . Luke's —Producer and Designer.
te S 1 stered skeleton timepiece, with improved lever
^‘apement.
improved clock-winder.
70
Davis, J., 119 High Holborn —Inventor andManufacturer.
A n instrument, on a new principle, to survey withoutEmulation .
( ^ Marchand, Lucien, 1 Red Lion Street, Ilolbornv —Manufacturer,
j.- er y small gold lever watch.
3-tul S ^ Ca ! C i° c ^» with four overtures, independent seconds,mnusing figures. Size, three feet high, two square.
^ Payne, William, & Co., 163 New Bond Street —n Inventors and Manufacturers.
or-n ^ ter c l° c k> 011 eight bells, in Amboyna wood, andrp. u case, made for the Sultan of Turkey.
\vr^^"Pieces, in buhl and or-molu case: and in tulipd and or-molu case.
^'itl °^ is ’ lever escapement, in engraved gilt case
wjtj P a fent musical chimes; and in black marble case,
* half dead-beat escapement,mall carriage clock, with lever escapement.p er stl ' 0llo mical clock, with chronometer escapement,of P etl ml day of month, moon’s age, noon and night, daycnrr. re pcat hours and quarters, and zodiacal signs, inMaved gilt case.
*mepiece, in square buhl case,t °ck, in square rosewood case, with lever escapement.«g ey cr timepiece, in satin-wood case.
C ^ oc ^ c ’ * n rosew °od case, with patent musical
Dalf- re g U i a t or , in mahogany case, new style.
Cj 11 i ^^mpiece, with thermometer.
in ebony case, with silvered ornaments.
Pa^ C ^’ w ^th or-molu ornaments, old English style.p e q e f t P e dometer, for measuring walking distances;tvijjq- eter attached to a repeating watch, with patentOd^’ s h (nv ing seconds and day of month.
°meter, for measuring carriage distances.
74 p-—--
Xlx » Isaac, 21 Conduit Street, Westbourne Terrace
Skel —Inventor.
°nl y 0 j 0n . chronometer timepiece, slow motion, beatingas ln three seconds; the escapement so contrived
beat witi? W t ^ le P eil( Iulum to vibrate two seconds every^ hout touching anything; a perfectly dead escape.
R G g- Tobias & Co., Liverpool —Manufacturers.c °iiho u ei . e( I compound-seconds watch movement, a newof' t1 ? 11 P r °duced by combining a quarter-secondss Uch "^eels with an independent full-seconds train,l? de Pende^ anUei \ as t0 . cause the seconds liand of thes seconds train to perform one revolution in
P ei 'formirf^ Ce time that the quarter-seconds train is■y, Gold * * revo * ut * ons *
^Rfee-Q U atc a> dome case, made from similar movement,utility rter plate movement, combining soundness and
° ril ^>nentq C ^ with same movement. Lady’s watch, withr, a en gi‘aving, and engine-turned case.
[Official Illustr.
Gold hunting watch, with ornamented and engine-turned case.
Silver lever watch, as used in Turkey.
Horizontal movement, jewelled in five pair of holes;extra chronometer-balance, adapted to all climates.
Left-handed movement, extra-jewelled, gold balance.
Silver hunting and plain watches.
Railway guards’ timepiece, secured in case.
79 Gillett, W. S., Upper Harley Street— Inventor.
Models of a system of thin rings or discs of metal,
which being conical or disked, may by pressure beshortened, and thereby extended either inwards or out-wards; applicable to pistons, stuffing-boxes, and othersimilar purposes; also to the construction of hollowcylinders to bear pressure from within.
80 Thomson, Adam, 25 New Bond Street —Inventor
and Maker.
Autochronograph: for the instantaneous marking orprinting of time, giving the month, day, and hour (nightand day), with the minutes and portions of minutes.
The machine requires setting but once a-month. Theclock must be wound once a-week. The register may beextended to any required length, and the date, with theexact time, may be stamped or printed in one second oftime.
The attendance of guards and of workmen can becorrectly noted; and the presence or substitution ofparticular individuals can be known by their signatureupon the register.
The commencement and duration of any event can hecorrectly registered within a few seconds of time, and allthe work of a “ time clerk” correctly done. Provisionallyregistered.
81
Pettit, W., & Co., 2 Cromble's Row , CommercialRoad, East —Inventors.
A watch, keeping time, though suspended in a glassglobe, filled with water, and surrounded with gold andsilver fish. The object of the invention is to secure theprotection of time-keeping and other instruments fromwater, sea-damp, rust, &c.
85 Hardy, G., 5 Wellington Road, St, John's Wood —
Inventor.
Electro-magnetic motive engine; exhibiting a newmode of employing electricity as a motive power.
85a Watkins, A., 7 Weymouth Terrace, City Road—Inventor and Manufacturer.
Original eight-day chronometer, striking the hours;being a self-acting repeater, chiming the quarters upon aset of five bells, and showing the day of the mouth ; eachset of works detached ; the whole comprising 200 piecesof mechanism in a diameter of not more than two inches.
Chronometers of three-quarter plate construction,with hard cylindrical springs, jewelled with rubies inevery hole; presumed to be the smallest ever made ofthe same construction, the diameter being nearly that ofa guinea.
86 Cousens & Whiteside, 27 Davies Street, Berkeley
Square —Inventors and Manufacturers.
A sporting watch, the novelty of which consists in itsdetermining the time to one-sixth of a second, by meansof an independent hand acting from the centre, anddetached from all the other hands, with stopping andstarting springs. It has a detached lever escapement, isjewelled in 14 holes, and is particularly adapted forracing and other purposes. It may be considerably re-duced in size.
87 Allis, J. II., Bristol— Inventor and Manufacturer.Bracket regulator timepiece, with a new description of
compound pendulum, which vibrates seconds, though lessthan half the length of a usual seconds pendulum.Adapted for compensation against ilie effects of heat andcold.
ated Catalogue.] 2 H