« 2022
2024 »
January
February
March
April
May
June
July
August
September
October
November
December
All
- 15-mm aircraft cannon
15-mm aircraft cannon - 20-mm aircraft cannon
20-mm aircraft cannon - 75-mm recoilless gun
75-mm recoilless gun - A Light Egyptian Chariot
The light chariots of the Egyptians enabled them to secure the fullest advantage from the speed and breeding of their horses, which at the time were considered to be the finest in the world. The Egyptian chariots were sometimes square, but more often they were semi-circular or horse-shoe shape, with the curved front towards the horses. - Bicycle Box Freight Car
- Bicycle Coal Car
- Bicycle Flat Car
- Bicycle Locomotive No. 1
- Bicycle Locomotive No. 2
- Bicycle Locomotive No. 3
- Bicycle Palace CAr
- Bicycle Railway Switch
- Bicycle Sleeping and Accommodation Coach
- Bicycle sytem applied to N.Y. Elevated railway
- Biplane
Biplane - Breguet’S Tourbillon
At C is shown the carriage which revolves with pinion B carrying the escapement and balance around the stationary wheel G. (After G. A. Baillie, Watches, their history, decoration, and mechanism, London, Methuen, n.d.) - Car 14 at the S.P. Depot
- Car 42 at N St. Carbarn
- Central Calif. Traction Co. Car 103 at Colonial Heights
- Central Calif. Traction Co. Car 105 on Stockton Blvd
- Combiined Elevated and Surface Structure
- Cross Section of Bicycle Structure and Bicycle Electric Car
- Drawing from U. S. Patent
Drawing from U. S. Patent 165831, showing Hopkins’ first design improvement, an arbor for the barrel and train to turn on and the balance displaced from center. - Elevated Double Track Georgia Pine Structure
- Elevated Railroad Station
- Ferri's instruments
- Firing Position
88-mm multi-purpose gun - Firing Position - First Copper Plate
A.Is the whole Still with all the parts put together. B. The lower furnace with a Firestone and a Grate. C. The Ashhole. D. The Fire-place. E. The Secod Furnace. F. The Balneum. G. The first Cover. H. The second Cover. I. The Body or Cucurbite. K. The Glass-head. L. A pipe or Tin to be put on the beak of the Head. M. The shutter of the Fire-place. N. The little Glass-bottle Inverted containing the Spirit. P. The Lamp made of Tin to burn with Spirit of Wine S S. The two pipes for the Weigs. - Folsom Power House
- Guy de Chauliac
- Guy de Chauliac's Cauteries
- Guy de Chauliac's Cauteries
- Guy de Chauliac's Instruments
- Guy de Chauliac's Instruments
- Hospital Ward of Tonnerre, France
- Maggi's instruments
- Maggi's instruments
- Maggi's instruments
- Medium flame-thrower
Medium flame-thrower - Out for a ride
- P.G. and E Car at Oak Park
- P.G. and E Carbarns at 28t hand N, 1914
- P.G. and E. Car 37, A wooden type, on the 3 line, 1941
- Panzer
Panzer - Part of the Drawings from U. S. Patent 186838
showing the winding and setting mechanism very nearly as it was applied in the Auburndale rotary. - Patent Drawing of the Hopkins Watch
The mainspring barrel E, of a very large diameter in proportion to the diameter of the watch, occupies nearly the full diameter of the movement. The spring itself, narrower and much longer than usual, is made in the patent model by riveting two ordinary springs together end to end. Over this barrel and attached to the stationary frame of the watch is placed a large thin ring A, cut on its inner diameter with 120 teeth. Near its edge the barrel E carries a stud g on which runs a pinion of 10 in mesh with the ring gear A. On this pinion is a wheel of 80 driving a pinion of 6 on the escape-wheel arbor. The 15-tooth escape wheel locks on a spring detent and gives impulse to the balance in one direction only, being a conventional chronometer escapement. The intermediate wheel and pinion, balance wheel, and balance cock have been adapted from a Swiss bar movement of the time. - Plan of a Chesapeake Bay terrapin smack
- Plan of a large Chesapeake Bay sharpie taken from remains of boat
- Plan of North Carolina sharpie of the 1880's
Plan of North Carolina sharpie of the 1880's - Plan of North Carolina sharpie schooner taken from remains of boat
- Plan of typical New Haven sharpie showing design and construction characteristics
- Remaining Drawings from U. S. Patent
Remaining Drawings from U. S. Patent 186838, showing the dial gearing used in the Auburndale rotary. - Sacramento City Lines Car 90
- Sacramento City Lines Car on 10th Street near M St., 1946
- Sacramento City Lines Cars at S.P. Depot
- Sacramento Electric, Gas and Railway co. on the J Line
- Sacramento Electric, Gas and Railway Co., Car 2
- Sacramento Northern Car 64 on C Street
- Sacramento Trolley System Map
- Screenshot (35750)