Industry + Work | 1940 | Silent | B/W
A film about the uses of silver in industry.
Molten silver metal in a smelting pot is being moved with irons and chains, by a man, and emptied into a mould. A block of solid silver metal is lifted out of the mould.
Caption: Sterling Silver.
A man is pushing a block of silver through rollers in a machine, again and again. The silver block becomes flat.
Caption: Knives, forks and spoons are known as ‘Flatware’.
A sheet of flat shiny silver is being pushed through a cutting machine. Cut flat forks are dropping into a box. Shaped pieces of flat silver are being put into a pressing machine.
Caption: The hammer shapes the spoon and stamps the pattern.
A man is placing cut spoon shapes into a machine and they are stamped. Close up of spoons in the mould. Close up of a stamped spoon alongside the original flat cut out.
Caption: The edge is smoothed off and the spoon is polished.
A man is polishing spoons on a spinning disc. Shots of spoons being polished and cleaned. Close up of finished spoons.
Caption: Tea sets, dishes and bowls are known as ‘Hollow ware’.
Many men sit at benches un a room, working on individual pieces with hand tools.
Caption: The finest hollow ware is made by hand.
A man is tapping a large moulded sheet of silver with a hammer. We see the sheet cut into the shape of a large plate with a raised rim. The man fixes an extra rim of silver around the plate. The extra rim is now carrying a pattern and the man is tapping the inside of the rim with a hammer.
Another man is using tools to tap a decoration around the edge of another large silver plate. Close up of fine detail that he is marking on the rim with fine pointed tools – sculpting the silver.
Close up of a mans hands holding silver jug and marking decorative patterns on the side.
Caption: The ‘snarling’ iron raises the design from the inside.
A man holds the jug under his arm, there appear to be metal rods going into the jug and the man is tapping the other end of the rods with a hammer. Close up of the raised decorative pattern on the side of the jug.
Close up of hand tools being used to engrave a surface pattern onto a vessel.
Caption: Master pieces have come to us from famous silversmiths.
A well-dressed man and woman examine a collection of fine silverware, displayed on shelves of a large cabinet. Some pieces are marked with names. The lady takes out a two-handled pot by Paul Revere. The gentleman holds a large sculpted vessel.
Caption: Silver-plate and Mirrors.
A man has several pieces of cutlery on a rack, which he lowers into a tank.
Caption: A Nickel Alloy is plated with pure Silver.
A diagram of the tank is shown to explain how pieces are plated with silver in a cyanide solution using an electric current.
Film now of a man lifting the plated cutlery out of the tank.
Caption: The silver is polished by buffing.
A man is holding the cutlery against a rotating buffer.
Caption: Mirrors are made by backing plate glass with a thin coating of silver.
A man is pouring a solution over a plate of glass, he then wipes the glass with a cloth, then he hoses the surface of the glass with water. The glass is lifted and drained and taken to another spot. The man is now pouring liquid silver from a jug onto the glass. The liquid is patted down onto the glass with a cloth.
Caption: After drying the silver back is given a protective coating.
A man is painting a dark film over the back of the glass with a large paintbrush. Once dry the glass is lifted and turned over. The other side of the glass is now highly reflective and a man is polishing the surface.
Caption: Silver in Photography.
A man is opening the doors of a large cupboard filled with ingots of silver.
Caption: Over three tons of pure silver are used every week to make photographic film.
Close up of gloved hands placing blocks of silver into a large container. Acid is being poured over the silver in the container.
Caption: Nitric Acid attacks the silver.
Shot of bubbling liquid in the container. A gloved hand lifts out one of the silver blocks, it has holes in it. Another piece is lifted out, which is now quite small.
Caption: Silver Nitrate crystals are formed.
Shot of crystals growing in a dish.
Caption: Silver Nitrate is changed to Silver Bromide for photographic emulsions.
Liquid is poured into a large metallic bowl with a mixer spinning at its center. The container is shown nearly full and looking white with the mixer still spinning. A man is seen at a machine where a large sheet is being fed through rollers.
Caption: Emulsions are made up of particles of Silver Bromide held in gelatine.
A man is by a sink. He has three containers in the sink, marked Developer, Water and Hypo. He opens a can of cine film and unrolls some film. Close up of his fingers on a strip of unexposed film. Magnified diagram of particles in the film. The man loads the film into a cine camera.
Caption: Light affects the grains of silver bromide to build up the picture.
The man is seen filming another man at a desk. He then unloads the film from the camera and takes it back to the sink. He takes a strip of film from the film can and puts it in the developer. After a few minutes he puts it in the water, then he puts it in the hypo.
Caption: The picture is ‘fixed’ by dissolving out the unchanged grains of silver bromide.
Close up of developed film showing images in frames. A man is examining a piece of film with a magnifying eyeglass.
Caption: Parts of the negative struck by light show dark.
Zoom back out from a close up of the film grain, starting greatly magnified, showing the particles in the actual film and zooming out to reveal the whole image as seen in the film. The images are negative.
Caption: Dark parts of the negative print light on to the positive.
The film is shown again, this time changed to a positive image.
To request more details on this film, please contact us quoting Film number 6096.